Origin of flab
Examples from the Web for flab
The flab that you actually want to lose is fat, and that will only come off to the extent that you cut calories from what you eat.
Flabby, flab′i, adj. easily moved: soft, yielding: hanging loose.
He's as brown as a gipsy and not an ounce of flab about him.Pearl of Pearl Island|John Oxenham