Fuckalry
Fuck-Rivalry: A competitive rivalry between you and your friend(s), in which you boast about your sex skills in an attempt to 1up the others, and prove yourself the best at sex. Typically more effective when trying to win a girl over.
"Me and Eric got into a dick measuring competition. I won that fuckalry."
"Sorry you had to witness the fuckalry between me and Angel, but I'm clearly the better bedder."
"Sorry you had to witness the fuckalry between me and Angel, but I'm clearly the better bedder."