He looked as if I had slapped him with a fish.

He slapped himself around the head several times with both hands.

He slapped her across the face with the back of his hand.

I slapped him across the face with my left hand.

The man slapped him across the face with the back of his hand.

I only slapped you with my open hand, not very hard.

He slapped the paper with the back of one hand.

He turned and slapped her across the mouth with the back of his hand.

Suddenly, he slapped her face with the back of his hand.

Then she slapped him with all her strength across the face.