When look at the penis externally, the flap of mars is where the scrotum curls around the side of the shaft, leaving a flap which doesn't move without prodding or poking.
Man 1: I've got a big dick.
Man 2: Yeah, but The Flap of Mars in your pants is below average in terms of flaccidity.
Man 1: ...damn.
Man 2: Yeah, but The Flap of Mars in your pants is below average in terms of flaccidity.
Man 1: ...damn.
by NigelMarsflap June 4, 2010
Get the The Flap of Marsmug. by Mikey Rinsa June 9, 2018
Get the Freakin' Flapmug. by choda4u2 March 12, 2011
Get the lab flapsmug. A Knacker Flap is the large flap of skin prevailing from the gut that hangs over a males genitals, making them completely invisible when naked. The sighting of a Knacker Flap usually occurs in older obese men, and is usually tucked into their shirt. It is the male version of the "gunt" which is that of a female Knacker Flap.
Holy shit, that dude's got a mean Knacker Flap!
Omg is that guy naked? Where's his privates? Oh they're underneath his Knacker Flap.
Omg is that guy naked? Where's his privates? Oh they're underneath his Knacker Flap.
by purplejane September 8, 2014
Get the Knacker Flapmug. Dave: Guess who I saw in the club the other day?
Mike: Who?
Dave: That cheating flaps bag ex of mine!
Mike: Ohhhhh my days!
Mike: Who?
Dave: That cheating flaps bag ex of mine!
Mike: Ohhhhh my days!
by The Big Man AC Slater December 29, 2010
Get the flaps bagmug. That girl’s va jj lips hang so low she smacked herself in the face with em while jogging. She flap attacked herself tryin to stay in shape.
by LeroyLooselips April 30, 2019
Get the Flap Attackmug. Named after Chuckie from the rugrats, the flapping chuckie is when a male with red hair whips his dick out and in an up and down motion flaps his dick about making a slapping noise from taint to belly.
I came around the corner and Eric had his pants down doing the flapping chuckie, more cock then I wanted to see in one day.
by Redbeard1988 July 9, 2017
Get the flapping chuckiemug.