The slug-like flap of skin located between the scrotum and the anus. Large ones can cause people to waddle. One can be "stirging" if walking in such a manner.
"NIGGA U BE STIRGIN EVERYWER SHIEET"

"Dude, I got kicked in the stirge and it felt like shit"

"This dumb nigger told me I was stirgin"
by I am Obama April 6, 2010
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