Mud Flap

A gay man's condom.

Dude, good thing you were wearing that mud flap!

by gdude April 13, 2009

Mud Flap

The foreskin of a gay male.

He has a nasty Mud Flap

by Xray_man69 September 14, 2006

Mud Flap

During missionary position-sex with a woman, she farts on your balls.

I was having wicked sex with my girlfriend when she gave me a mud flap.

by Cadillac Williams February 5, 2005

Mud Flap

An empty scrotum or ball sack.

Pat was born without balls but still has a sack dangling; when he's getting pounded from behind, it acts as a mud flap to keep shit from getting all over the place.

by M F Fuckenstuff July 1, 2016

Mud Flap

Balls. When sitting correctly, a mans testes may cover the anus and becoming a 'mud flap'. Also, when two are engaged in intercourse in the missionary position, the mans testes may cover the woman's anus and therefore becoming the woman's 'mud flap'.

Woman: What's a mud flap?
Man: I'll show you...

by saggy sack October 27, 2010

mud flap

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

Mud flaps

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