We have a full schedule of social activities each month, ranging from lunches and happy hours to games nights, discussion groups, trivia, and our Speakers Forum.

All events are open to all Mensa members, and to guests who accompany Mensa members. Events in public places (restaurants, theaters, etc.) are also open to prospective members. RSVPs are not required, except as noted.

To protect the privacy of our hosts, home addresses and personal email addresses are not listed on this website. Current members of Orange County Mensa can access this information in the current Oracle newsletter or the weekly eBlast.

The calendar of activities in the Oracle (our monthly newsletter) may include additional events that are open only to Mensa members and their guests. To view the Calendar in the Oracle, please visit American Mensa’s local group newsletters webpage. Have your Mensa log-in info (email address and password) ready.

Once a week, we send an Email Blast — “This Week in OC Mensa” — that lists the activities for the next seven days to each member with an email address on file with American Mensa.

Mensa members only, please: Sign up for the Weekly eBlast, “This Week in OC Mensa.” Use your preferred email address. Receive the OCM activities for the next seven days delivered to your email inbox.

Mensa members: You can schedule your own activity or get-together in next month’s calendar by submitting a Calendar entry to our Calendar Editor at:

NOTE: Due to the COVID-19 pandemic, some of our normally scheduled in-person events are on hiatus, some are virtual, but some are back to in-person! 

Saturday, May 1

1:00 PM        

OCM Virtual Field Trip: Penn Museum, Philadelphia, PA

We’re heading back (via Zoom) to the Penn Museum for Daily Life in Ancient Rome.  Embark on a virtual tour of a lavish Roman home to learn how to speak and write the real Latin terms for each room.   Participants will look closely at classical artifacts that would have been used inside the house to better understand the day-to-day lives of ancient Romans.  Program Length: 1 hour.  Admission is free but you must RSVP with your Mensa membership number to:,  first come, first served.  You’ll receive a confirmation email if you are among the first 30.  Then just before the event goes live you will be emailed the Zoom login link.

Contact: John Olsen:


4:00 PM            

Saturday Sit Down

Location: We will go to Masala Bae, 13812 Red Hill Ave., Tustin.  They are setting aside a room for us and because they do not have a liquor license, we get to do this BYOB if you want alcohol.  They offer a wide variety of food from curry to kabobs with a great many vegetarian options.  So come, eat, drink and be merry.

Contact: Valerie (714) 296-8001, calls after 5 PM on weekdays please.


Wednesday, May 5

12:35 PM             

LuncH with a Capital H

We’ve been coming to Hollingshead’s for 3 decades!   And now after a year we are back!   If you’ve had your vaccination you can join our table.

Location: Hollingshead’s Deli, 368 S Main St., Orange.  Behind Duke’s Hamburgers.  North of the 22 Fwy, south of Chapman.  Look for Deli sign in the corner of a small shopping center.

Contact: John Olsen, (714) 771-3095.


Saturday, May 8

11:00 AM            

Non-Screaming Politics – In Person

Cancelled. We’re online-only (see May 15) from now on.

Contact: Tom Streeter, (949) 668-3468.


12:00 PM             

Inland Empire Mensa Zoom

Inland Empire Mensans who live in Riverside and San Bernardino counties (now or in the past) are scattered in different Mensa chapters.  Let’s gather together and meet virtually to join fellow Inland Empire Mensans for Mensa style ZOOM discussions, serious and jocular, deep and shallow, once again.  Inland Empire Mensans meet every second Saturday of the month from 12 noon to about 1:30 pm.

See Oracle weekly eBlast for details on how to attend.

Contact: Questions? Joan Francis at


Monday, May 10

10:00 PM         

Calendar and Oracle Deadlines

Submit June calendar entries to the Calendar Editor at

Submit June Oracle entries (articles and photos) to the Oracle Editor at


Tuesday, May 11

7:00 PM to 9:00 PM        

Zoom Book Discussion

For our first meeting this month, pick a book you’ve read and tell us about it.

Contact: Jana Bickel.  To be put on the email list for future notifications and Zoom links, please call her at (818) 506-4032.


Saturday, May 15

11:00 AM          

Non-Screaming Politics is an online political discussion group. Bring your own (virtual) coffee!  Lunch is not included; we stop at 12:30.

Location: Join us by video-conference, See the Oracle or weekly eBlast for information on how to join the discussion.

No download or registration needed!

For best results, use:

  • the Chrome browser;
  • a computer instead of a smartphone;
  • an external microphone instead of the built-in mic; and
  • headphones instead of speakers.

Contact: Tom Streeter, (949) 668-3468.


Sunday, May 16

4:00 PM           

OC Mensa Speakers Forum

Topic: Ask a Geologist: The What, Where, and Why of Landslides

Each year in the U.S., landslides kill an average of 25 to 50 people.  Globally, the death count is in the thousands.   Landslides also destroy property and portions of highways at huge economic cost.   What are the different types of landslides and their causes?  Do landslides only occur on hillsides or can they occur on seemingly level ground?  Have the number of landslides increased in recent years?   Can they be predicted and/or prevented?  What are the odds that a major landslide may affect life as we know it in Southern California in the near future?

Presenter: Greg De Hoogh.  A long-time member of Orange County Mensa, Greg recently retired as a geology instructor at Cal State Long Beach.  He will share with us his knowledge of landslides, describing several significant ones, including some in California, and the conditions necessary for a landslide to occur.

Format: This will be a remote event using Zoom.  See the Oracle or weekly eBlast for information on how to participate.

Contact: Angie Mattson, Landline Phone: (714) 974-0847; Mobile: (714) 404-7766.



Friday to Sunday, May 21-23

6:00 PM Friday to 12:00 PM  Sunday  

San Diego Mensa Virtual RG

Please join San Diego Mensa for a (Free) Virtual RG May 21-23, 2021, the weekend prior to our usual Memorial Weekend event!   This event will be a hybrid Discord & Zoom event with the needed Discord and Zoom links to be provided nearer the event.  Discord will include video and text channels for Hospitality, SIGs, games, and more!  Our speaker sessions will continue to be hosted on Zoom.   To request to be a speaker, visit (by May 5th):  New to Discord?  Be sure to check the San Diego Mensa weekly e-blast and online events for an upcoming session for “How to Discord” in May.  Additionally, there will be another session to open the event on Friday night May 21.

Contact: Questions? Jenn Morris,  SDMensa Virtual RG Chair,


Sunday, May 23

3:00 PM to 3:45 PM         

Ancient Greek and Latin Webinar

Almost 40% of English words (including coronavirus and pandemic) derive from ancient Greek and Latin.  Familiarity with these languages can help you analyze parts of words to figure out their meanings in English and other modern languages.   All Mensa Gifted Youth Program members (and members with children or teens) are invited to join us for a virtual get-together with Rebecka Lindau and Mike Braunlin of the John Miller Burnam Classics Library, who will teach us about Ancient Greek and Latin.

Contact & Location: Please email Gifted Youth Coordinator Jenny Rankin at to RSVP (only those who RSVP will receive details necessary to join the online Zoom meeting).

Who May Attend: If you are (a) a Mensan under the age of 18 you must attend with a parent or guardian present to oversee your participation, or (b) if you are a Mensan who has child(ren) below age 18 you must oversee your child(ren)’s participation.

Conduct Reminder: As with our in-person events, all gifted youth are expected to attend with an adult present at all times.  Anyone displaying disrespectful/inappropriate behavior will be removed from the Zoom call immediately.



Tuesday, May 25

7:00 PM to 9:00 PM            

Zoom Book Discussion

For our second meeting of the month we will be reading books by Terry Pratchett.  Pick one you like: Going Postal, Wyrd Sisters or Color of Magic.

Contact: Jana Bickel.  For questions and to be put on the Book Discussion email list so you can get the Zoom links, please contact her at (818) 506-4032.



Thursday, May 27

5:00 PM LOT            

(Last Odd Thursday)

It’s Last Odd Thursday for the 2021 season and a long time coming!   If you’ve had your vaccination then come out and hang with us.   It’s our al fresco Happy Hour which will be held in our backyard this year.  Bring a snack to share if you are so moved.

Location:  Orange.

Contact: John Olsen, (714) 771-3095