paint-brushing
To slap someone’s face hard enough to make their teeth rattle and their ears ring, either with a backhand or a forward swing.
He said, 'I got slapped across the face like a sack of potatoes.'
She tweeted, 'My ex slaps harder than my dad's belt.'
His friend texted him: 'You got your face smacked so hard you looked like a punchbag.'