pull a conc
to pull a conc means to have sex with a girl but pull out just before you cum and blow ur load into your hand, then throw the cum at the girl. usually done when having sex with someone very attractive but very very annoying.
guy:i met the most annoying girl at the bar last night, but she was hot so i went back to hers, pulled a conc and bailed
other guy: ahhh thats ace, i wanna pull a conc just to see what happens
other guy: ahhh thats ace, i wanna pull a conc just to see what happens