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1.
A real dirtbag. The kind of friend who stays over at your house uninvited each weekend, eats your food, drinks your beer, all without asking.

Likely to live with their mother, drink and drive, and engage in other unsavoury public behaviour.
"Dude, why do you stay friends with that guy?"

"I know he's a real trick sunday, but we have a lot of history together."
by c.j.m. August 18, 2011