"Ayo! Did you see the way Nico straight told the professor his science homework and him didn't have Chemistry and that's why he couldn't turn it in!? He got a fat bottom lip!"
Fat that cannot be lost by some sit-ups, but only by running on a treadmill for hours or getting liposuction. Usually happens when you gain fat, but then wait a year until you realise you might as well lose it.
Awwww man, now I have liposuction fat and need help off the couch