This normally happens when you ball the hell out of a basketball oponent by crossing over him, shooting a fade-away jumpshot or by going down the lane for an easy lay-up. The reference comes come from Uncle Drew Pepsi commercials
to abandon a can of beer without completely consuming the alcohol inside it. usually, this beer will be a keystone light. Also, a drewed out beer will usually be found in the near vicinity of other drewed out beers... in part because the culprit usually commits the act muitlple times, but also because these poor, insecure, abandoned beers tend to get lonely. A synonym of drewed out is "wounded soldier".
dude, there were so many drewed out beers left in my room last night.
The art of making something way longer than it was supposed to be, because damnit these were ALL great ideas and critical to the story and I can't justify killing any of these darlings.