Old lady crotch fat Share definition Flag The presence of fat in the upper crotch region of an older lady; forming a round bubble-like shape. Pretty much self explanatory... Did you see that old lady's crotch fat? Old lady crotch fat by ILoveSavedByTheBell October 6, 2004 0 0 Get merch Get the Old lady crotch fat mug. Buy Now — $32.95 See more merch