Where a fat guy doesnt have a stomach hanging in front of him like a beer belly or a keg its a big piece of skin hanging down to his waist or his knee's. Like the flaps on the back of the truck
You anda friend see a guy who streaches and lifts his shirt and all you see is skin not even shaped hanging down.

Your Friends says "Ew he doesnt even have a keg"
You say "No joke it looks like a Mud Flap hanging down like the back of a truck.

by Michaelann Dach December 20, 2008

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Top Definition
Derogatory statement describing a girls vagina. You can picture it if you'd like.
"How was she?"
"Decent. .. Hell of a lot of mud flap down there though."
by Balls November 14, 2004

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Getting shit on the back of ones testicles due to explosive diahhrea.
That Taco Bell I ate came out so fast I mudflapped it.
by W.E. Coyote August 20, 2003

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A mudflap is something that hangs underneath but directly behind the wheels of any land vechicle. Mudflaps are used so that mud doesn't fling up while the wheels are spinning in rocks, dirt and of course, mud.
1. Mud flaps are great additions to all-terrain vehicles.

2. People at Urban-Dictionary don't know the meaning of "Mudflap".
by impactforums November 11, 2005

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When a female has so much intercourse that her genitalia resembles the mudflaps on a semi truck.
When colette took her pants off I could see the reason they dubbed her with the nickname "mudflaps".
by neo max zoom dweebie January 21, 2006

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1. The flaps located behind the wheels of a car, so that mud doesnt get caught underneath
2. When a chicks inner lavium sticks out past the body. Looks dirty
Chicks with mudflaps are dirrrty
by WhoCares December 19, 2003

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Found on a woman with excessive sized vagina lips. The man can also use them as leverage will going down on his woman.
Hey bro, did you hear that Sparky grabbed hard onto B's mud flaps last night?
by KDogg_1979 July 29, 2006

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The result of way too much anal sex - the anus is so stretched out that when it returns to its 'not being penetrated' state, the extra skin forms a flap over the anus.
Since anal is so huge in porn, most pornstars have mudflaps.
by Stegosaurus Rex June 24, 2005

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