1. A person with a mental deficiency
2. An offensive term used to refer to someone acting irritable or generally being a cock.

AKA - retard, remedial, wierdo, freak
Example 1

Man 1: "Have you seen that guy over there licking windows?"
Man 2: "Yeah, he's a remtek"

Example 2

Man 1: "What the frigs he doing?!"
Man 2: "Being a remtek!"
by Phillis1984 February 9, 2008
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