fat lip

big fat

Complete, utter, total.

bite one's lip

To forcibly prevent oneself from speaking, especially in order to avoid saying something inappropriate or likely to cause a dispute.

button one's lip

To remain silent, especially in order to keep a secret or to avoid saying something inappropriate.

crack a fat

To get an erection of the penis.

fat chance

Little or no chance, a low or nonexistent likelihood of occurrence or success; a faint chance.

fat finger

A supposed cause of typographical errors, especially keyboard errors, caused from erroneous key presses or typing errors on touchscreen devices.

fat of the land

The greatest part of anything; the finest and most abundant share of resources; the cream of the crop.

give lip

To speak to someone rudely or without respect.