She slapped his cheek hard with her open hand.
She might just as well have slapped his cheek with a leather gauntlet.
If someone slaps your left cheek then you slap his right, only harder.
He slapped the engineer's cheek lightly four or five times with his fingertips.
He slapped the man's cheek lightly and repeated the name.
Deliberately he slapped her cheek with his free hand, "Control yourself!
On another day I provoked him in some way and he slapped my cheek.
He kissed him again, slapped his cheek lightly without word or smile.
She slapped his cheek gently and he opened his eyes for a moment.
Then she hauled off and slapped his cheek hard.