The perfect mix of being incredibly cocky, and awesome at the same time. You know if you're cocksome you can totally swoon any girl you want, you're THE papii chulo. These people are most commonly found in Atlantic City at the bar, on the prowl for some ass.
Doug may seem like a tool cause he gets drunk every night and drives a blacked out cobra, but he's actually pretty cocksome.
The act of aiding one's chances of getting laid, pussy, vag, bj, boobies, hj, 1st, 2nd, 3rd, and/or 4th base; can be done through performing self-reputable acts or boasting on someone else.
So dude, that 46 second kegstand totally cockboosted you with Kierstin.
Thank you for leaving the dorm last night, homie, that was a total cockboost with Morgan Adams.