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2.
When a person gets drunk then tries to have sexual intercourse with people that are not drunk.
drunk guy:oh hey baby wanna get freaky tonight?

girl:ew get away from me you swamp doggy.
by Con-dog February 15, 2009
 
1.
A very fat unatractive girl that waits in the rejected line outside hoppin night clubs
BEWARE: swamp doggys are a very dangerous sexual predator waiting to pounce
ahhh swamp doggy runnnnn!
by philly phil fresh May 15, 2009