In a hockey fight when you reach around behind an opponent, grab his jersey and pull it up over his head, thereby covering his eyes so you can punch his freakin' lights out.
"Did you see Tie Domi jersey that guy in the Leaf game last night?"
1.) to be sneaky, nice, mean, hot, evil, crazy, intelligent, awesome, deadly, scary, funny, intimidating, lovely, charming, and dry all at the same time.
1.) "i've never felt like such shit after an argument. that girl switched moods so fast, like a shumu"
2.) "calculus is so shumu"