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1.
Yoga Pants that are so tight fitting that they leave nothing to the imagination
Guy 1: "Damn! It looks like that girl isn't even wearing pants!

Guy 2: "Nah, she's wearing some of those noga pants"
by TNiggz November 30, 2012
 
2.
Yoga pants on someone that is too fat or disfigured to be wearing them
Yoga Pants on that fat-ass bitch? More like Noga Pants.
by Megaweapon February 26, 2013