3,689

A 3,689 requires three parties, and features a person in the center of a 69 sandwich alternating between the person on his/her left and his/her right. For infinity, forever, eternally.

Sam, Dani, and Max were 3,689-last night forever, until they took an energy drink break and a nap, and then they went right back at it. I heard they mixed it up a little and rimmed each other a lot, too. I'm so jealous, sounded like fun from the other room.

3,696-ing

Requires three people. Persons A and B are 69-ing and Persons B and C are 96-ing about tge meaning of the universe whenever Person B takes a breather from all the licking and/or sucking.

Sometimes Pat liked being the 6 to my 9, and sometimes Pat liked being the 9 to my 6, but I generally preferred being the 9, and that worked out nicely for us in the end. 3,696-ing kept us together.