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.
by Dyingforsleep November 19, 2012
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1.flossing one's ass.

2.To floss an ass.
"Robin likes to Flass his mom"

"Where is Sanders? He's flassing"

"Sure am Glad I'm not flassing....like Robin is in the Gazebo...with his mom"
by Cyrus224 October 12, 2005
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To clean the crevice of someone's posterior with floss, spatula, tumbleweed, or any other implements suitable for the task.
Flassing is recommended for people who have a great deal of things stuffed in or up their cracks that they become stiff and obnoxious.
Warning: Consult your physician if you experience rashes, blisters, or any other physical discomfort from doing said activity.
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Person 1: "Oh my goodness look at that skinny bitch!"'
Person 2: "Haha, yeah, look at the flass!!!"
by forwhatitsworth July 01, 2009
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Glasses that do not contain prescribed lenses, usually found on the shelves of your local Dollar General. worn by women who want to look sophisticated or cop out of putting on make-up/doing hair.
"check her out, she is totally sporting flasses"
"those can't be real, they are deffin. flasses!"
by Pyrotastic December 01, 2007
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The way that flabby person on the block goes off on you for the littlest thing, shaking their head back and forth, getting all up in your face and pointing their grimy fingers right at you as they proceed to spit on your face by yelling; their sass is just as extra as their flab
Guy1: "so I was in McDonald's and this woman was standing there for a good 5 minutes trying to make up her mind. I knew what I wanted so I walked in front of her to order when they said 'next please'. Then that bitch proceeded to go off, getting red in the face and making me smell her nasty ass breath. She caused a huge scene over a simple mistake."
Guy2: "Well bro, be happy you made it out alive cause that bitch could have suffocated you with her flass."
by Tayray467 April 27, 2018
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