Excess layer of droopy fat found hanging below a redneck's package.
Cooter: I can see your Redneck Testicle Mudflap in those new skinny jeans.

Earl: Curse you Cooter!
by TERminalambiaNCe August 29, 2012
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When a male is well endowed and his nuts hang in a "low fashion" to guard the rest of the body from a sudden blow coming from the anus and/or asshole. Another name for the scrotum is MudFlap.
Had to whipe my MudFlap and my ass after that god like dump I just took
by Ryan Clevinger January 23, 2007
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The act of taking a towel, rag, sheet or anything like that and taking a healthy dump on it. Make sure it stays on or you could smear it on. Wait for someone to walk in and unexpectadly smack them in the face with it and yell "HA Montana Mudflapped you"
So there I was waiting for Ethan to walk in and then BAM I Montana Mudflapped him in the face.
by Allen Pankovich December 31, 2009
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When a chick sucks your dick with a dip in. Preferably Timberwolf Wintergreen.
Man... so you know Regina??... Haha..she just gave me dome in the guys bathroom!

“Isn’t that the one who dips?”

Yeah! Andshe was still dipping while she was sucking my dick! Kinda tingled.

“Dude, she gave you a Mid-Missouri Mudflap!
by NachoCheezeYeh May 7, 2019
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When a faggot pushes his balls inside his own asshole. Gives the appearance of a muddy mudflap upon removal. Often shortened to WeHo Mudflap.
John: Chris always tucks his balls in his

asshole before he goes out cruising.
Jeff: yeah, he loves the West Hollywood Mudflap.
by thereallegend February 24, 2014
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During intercourse from behind, (vaginal or anal) with a cousin, the female projectile defecates onto the males testicles.
Man: "My cousin came over last night and projectile dedicated on my balls. She gave me a west Virginia mudflap.
by Heyman23565741 August 1, 2021
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When you put on a muzzle and have someone shove shit in your mouth and pour maple syrup on top of it.
Muzz met someone online and gave him a Toronto Mudflap.
by UnicornsRock July 2, 2023
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