a strange person. be it in physical appearence or in the way they act.
Man that guy James is a real klopek.
by eric March 28, 2003
A person who is slow-witted and incapable of paying attention. Symptoms are usually a result from generations of in-breeding
I told Klopek to change it three times already, and he still can't get it right!
by WALLY July 02, 2004