A person who chokes under pressure.
A person who lets their team down in a game, project, debate, anything that has any importance.
A person who misses a field goal kick to tie, or win the game.
A person who cant make a penalty kick to win a game.
A person who blows at picking up girls.
Wow!?, did u see Rex Grossman get intercepted??, He is truly a shanko.
Fuck. Gerald missed that field goal to win the state championship. I just cant take that shanko anymore... lets kill him!
How sad, that shanko just blew his chance to hook up with that girl.