69 originally comes from Ariana Grande's song, "34+35". Ariana says "Means I want to 69 with you" at the end of the song. 69 is jokingly used by GEN-Z, and is known to mean sex. The two numbers 6 and 9 put together look like two intertwining bodies, so it's obvious why it means sex.
by MacyHasTeaAndItsBoiling December 19, 2021
Get the 69mug. 
by George heny January 28, 2019
Get the 69mug. 
The acting sexual position (gay or straight) of when one partner climbs on to the top of another, to make almost a circle position, where the two partners fuck (oral) another.
Friend: “Oh shit, did you hear that ‘insert name here’ had a 69 with his gf last night?”
Other Friend: “ Oh yeah, I heard! That turned me on from the start!”
Other Friend: “ Oh yeah, I heard! That turned me on from the start!”
by eiDtnaWI October 15, 2019
Get the 69mug.