'Floss' is just another word for 'awesome'.
Girl: Do you see her hair?! It's so fuckin' rad!

Other girl: Yeah, it's totally floss!
by ElleUndeadd95 May 18, 2009
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if the verb 'to chill' is jv, the verb 'to floss' is varsity. a much higher level of chilling.
by g.tarc April 30, 2006
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to diss or tell a person off
Person 1: I bet you don't even know what 'dope' is, man.
Person 2: Please, my neighbor hasn't been a cow for my whole life.
Person 3: Oh, you just got flossed!
by dereki April 28, 2008
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The word "floss" is in the same category as "awesome", "cool", "wicked", "chill", etc.
Girl: "Woah, your shoes are so floss!"
Boy: "I know, right?"
by Girlw May 2, 2009
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Showing off; showing what you've got.
"And we like to floss /
All my diamonds gloss /
I represent the dirty dirty dirty dirty South."
--Lil' Flip
by Bexx January 29, 2005
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To show off all of your money, designer clothes, and expensive jewellery.
Damn johnny was flossing on everyone with that outfit today.
by rip ollie November 27, 2017
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