A 90 percent hand job, 10 percent blow job.
I was listening to "come thou font of every blessing" when this chick texted me and said she wanted a mouthful of cock. I was game but I only got a 90/10. bummer.
by 323E93 May 07, 2010
When a guy comes 90 degrees and a girl comes 10 degrees in order to proceed with ''getting it''.
"lemme get dat 90/10 gir!"
by Dirty D333 November 29, 2009