Flassm 

When you are so bored you do nothing and then finally flassm and spontaneously combust

Yo dat guy is so bored he just flassmed bro

Flassm by Bla ba flbchb March 5, 2013

flapsmack 

when two larger folks screw, it's the sound of their bellies that you hear

FLAPSMACK. FLAPSMACK. FLAPSMACK. FLAPSMACK. Oooh. Oooh. FLAPSMACK. FLAPSMACK. FLAPSMACK.

flapsmack by marinara82 February 20, 2011

Flassing 

Treating a girl like shit in order to manipulate her into finding you attractive, at least for a day or two. You completely disregard the females feelings to control her.

Sohil, you were flassing too hard back there, I thought she was going to slap the shit out of you.

Flassing by Dyingforsleep November 24, 2012

Flass 

1) A flat ass

Person 1: "Oh my goodness look at that skinny bitch!"'
Person 2: "Haha, yeah, look at the flass!!!"

Flass by forwhatitsworth July 1, 2009

Flassy 

Flirty-Sas-Adj. It's an aggressive flirt. To take the day off, to say fuck peer pressure, having a margarita for breakfast. Why not? When you feel like you should eat a salad but say fuck it, i'm getting loaded baked potatoes on rye, buttered rye with fucking vanilla drippled mainly manly testosterone driven vanilla dipped but basically, any kind of DAMN drippled or dusted of dripped flavored crust on my fucking rye kind of day.

Lizzith the strong armed... need I say more. Oh, and my mom has 3 pairs of leather pants... literally.. three. oh.. ok.
I was downtown at the bakery and i wanted a hot dog but i said oh no i need to get something light so i said oh bitch i want a salad ( i was feeling flassy)

Flassy by tegjoo May 6, 2011

Flasma 

An extremely flaky human being.

Mary: So are we going?
Getroot: Yes, we are!
Mary: Are you sure? You ain't gonna pull a Flasma, are you?
Getroot: Flasma! Hell no girl! I ain't one of those flakys!
Mary: Good, coz I ain't liking those flaky Flasma types.
Getroot: Hell yeah, girl, nethier do I!

Flasma by flaky let me down April 5, 2010

Flass 

Simply when one has a flat ass. Hence Flass.

That girl has quite the Flass!

Flass by Roy Michin May 18, 2015