The act of two people giving eacother oral sex in a position similar to how the numbers 6 and 9 look when they're beside eachother.
Bf: You free tonight?
Gf: Yeah why?
Bf: Wanna 69?
Gf: I'm on my period.
The time when you have the you know what
Do you want to 69
Sure
"moans in prosses"
Person 1: I went to the mall, it was very 69
Person 2: bro just say nice you sound retarded
Usually when this word is introduced into a conversation its gonna get real sexual or an autistic 9 year old will laugh.
Guy: Wanna play a bored game?!
Girl: Sure.
Both: *plays game*
Girl: What score are you at?
Guy: 69
Girl: *gets naked*