If it just split his lip, you won't be able to tell.
His mouth was stiff and sore, as if a punch had split his lip.
Carlos backhanded her with enough force to split her lip.
The first two times he was slapped, hard enough to split his lip.
He wanted to grin but was afraid it would split his lip even more.
She could have bitten her tongue or split her lip.
She split his lip, then jerked back in shock.
Then we lost our best player, who fell and split his lip before the sixth game.
He hit his mouth on the dash and split his lip.
She said, "So it was you who split his lip.