Definitions by Microwave goes vrrrrrrrrrrrr

Uno Stacker 

You play uno with your friends so you could see one of them suffer, with your collection of 4+ wild cards. you are the pain of there existence, make one of your friends suffer with gang banging one of your friends with the stacking rule.

it means you show no remorse to one of your friends in Uno, beacuse you're an uno stacker

Uno Stacker by Microwave goes vrrrrrrrrrrrr May 27, 2022