flap jack 

n. flacid penis that remains so during attempted masturbation; personal cock-block

v. the serious and vigorous attempt at reviving a limp dick through masturbation

Eliza Dushku is so hot, too bad I got a case of flap jack.

flap jack by Pepsimax11 May 10, 2009

Flap Jacking 

A tandem masturbatory technique in which the participants lock arms at the elbows whilst gripping the shaft of their penises. They then flap elbows like a bird in synchronization to most efficiently share the work of jacking.

I jerked off with my friend, but it wasn't gay because we were flap jacking.

Flap Jacking by Kingsbury Brothers February 6, 2010

Mississippi Mud Flap 

When a man cums on a woman's asshole and lets it dry, thus creating a covering over her hole resulting in a "flap" of dried seminal fluid the next time she takes a shit.

Hey bro, I gave my girl a Mississippi Mud Flap last night, that shit was savage 😂

Mississippi Mud Flap by The Hard-on Boys January 29, 2018

six flags 

A sex act that entails one person taking penis from six other person(s). Originates from Six Flags themepark.

Six Flags are often given at Six Flags

six flags by carlislejenkins August 1, 2009

mud flap 

when your girlfriend sharts on ur balls while diong her missionary style

my girlfriend had burritos for lunch and gave me a mud flap during our nooner.

mud flap by lunchbox9000 August 23, 2009

Flap Jacks and Cottage Cheese

a woman with saggy boobies and a really wrinkled up belly, usually the result of having multiple children

Barb should NOT wear that bathing suit she looks like Flap Jacks and Cottage Cheese!!!

Flap Jacks and Cottage Cheese by Bob1984 July 25, 2010

meat-flap mama 

A woman with a large vagina or very large labia lips.

"Well I've heard he is very well endowed, are you sure you can handle something of that size?"

"They don't call me meat-flap mama for nothin'!"

meat-flap mama by Thy Nguyen October 21, 2008