A not so classy guy with not so high standards for the ladies. A Tenner is the type of guy that hits threes off the court but misses on the court.
Dude 1: You were so hammered last night, you were acting like such a Tenner
Dude 2: I know bro, but I just needed the room
Dude 1: But she was a fucking three
Dude 2: Its just a Tenner thing bro