An obtuse extremity characterized by large people. It appears most commonly on obese men with extremely large skin flaps. They may look like wings or back boobs, but can appear on the legs or underneath the arms.
Did you see the people on the People of Walmart photos with the large wumpers? They looked like wings

Dude, that guy has wumpers the size of The White House! He pretty much needs a back bra.
by zugbug November 01, 2013
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an incredibly lengthy and fat penis.
Belinda: So, how big was his...you know? (giggles)

Sue: Christ, he had a real willy wumper, like a jumbo Ballpark Hotdog!
by DrCauliflower May 02, 2008
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To smack your balls so hard against a wall, you cannot walk, let alone stand for at least a week.
Damn, did the hospital provide a wheelchair?

No, they blamed me for the Wallsack Wolly Wumper!
by ProZak95 July 20, 2011
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The wumper is that one little faggot at school that is extremely annoying that no one beats up.
by Thebigpp November 19, 2019
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