When a man has so much fat that it is hard to find the penis as the thighs are in the way.
See also thip (female form).
He has to wear sweat pants. There's no way he can fit his thenis in jeans.
He just aims in the general direction of the urinal. He hasn't seen his thenis in years.
When a woman's pussy lips and thighs are both so ginormous that it fuses together as one.
I can't fasten my zipper. My thips keep getting in the way.
I can't put that catheter in unless someone holds the thips up and out of the way.