its where the male licks the female's pussy and the female sucks the male's dick. can be done with male and male by them sucking each other or female and female by them licking each other!
ellie and jasper walk into jaspers room*
jasper: u ready baby
ellie: hell yea
iris and kym outside watching a film* starts to hear noises
ellie: screaming* AHHHHHHHHH DONT STOPPPP
jasper: you like that bitch?
ellie: yes yes yes yes yesssssss
iris: wtf is happening in there
kym: i think they are 69ing!
iris: o fuck
jasper: this is so fresh ellie!!
ellie: yea i'm good at sucking cock
iris and kym: WTF DID SHE JUST SAY THAT
ellie and jasper walk out of jaspers room*
kym: you guys know that me and iris heard you doing that
iris: yea you were very loud
jasper: and...
ellie: yea we did it for a reason...
iris and kym: WTF YOU DIRTY BITCHES