Definition

A guy who has potential to be decent but instead chooses to be a manipulative jerk who gets off on playing with people's emotions and wasting their time. Essentially a wannabe player with delusions of charm and zero regard for anyone else's feelings.

Example Usage

He seemed nice at first, but then I realized he was just another assmen stringing girls along for entertainment.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=assmen&defid=147440)