A condition where a person is completely normal/nice from day to day life, and a "monster" or goon while on the ice/field/etc.
Ryan: Hey, you know Zach?
Ben: Ya he's a cool guy.
Ryan: Did you hear he beat a guy up in the game last night?
Ben: Seriously?!?
Ryan: Ya I know, he suffers from a bad case of Jekyll and Hyde Syndrome
Ben: Ya he's a cool guy.
Ryan: Did you hear he beat a guy up in the game last night?
Ben: Seriously?!?
Ryan: Ya I know, he suffers from a bad case of Jekyll and Hyde Syndrome
by Diagnosis #1 May 15, 2011