When a guy places his cock in the center of another guys well defined abs and thrusts up and down, similar to titfucking, only in this case, a set of 6 or 8 pack abs.
I straddled Ryan while he lay on his back and abfucked him for a bit, those tight abs of his felt amazing.
Crossfit girls all have muscular"abfupa".
that girl has a turtle shell 6 pack and an abfupa.
that anavar and HGH cycle is working well you're starting to get an "abfupa".