mouth · slap in the face

Why don't you give your mouth a rest?

Guards! Slap that vile woman's face!

If we were supposed to talk more than listen, we would have been given two mouths and one ear.

He was in open-mouthed amazement.

Davy winked at Anne, and then, leaning over the table, snatched Dora's first piece of cake, from which she had just taken one dainty little bite, out of her very fingers and, opening his mouth to the fullest extent, crammed the whole slice in.