Having Mutual oral sex with a midget or someone half you size.
Yeah, this chick was so short that when we sixty-nined it turned into a 34 1/2!
by JD Lucas June 18, 2003
34 1/2 is half of 69. It means one performing an oral sex act instead of two performing simultaneously.
34 1/2 is my favorite sexual position, it's less work than 69.
by asisee January 16, 2013