A person noticeably lacking social skills or is a try hard or just a loser.
"Did you see that guy who tryed to pick up Jenna?"
"mmm, he was a slum ducky big time. lol"
by Elise Walsh August 2, 2007
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social reject, annoying invalid, a parasitical person
he's such a slum duckie
by jipsal July 5, 2007
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