give smb a slap in the face
1slap — I n. 1) to give smb. a slap (in the face) 2) (misc.) a slap in the face ( a direct insult ); a slap on the wrist ( a gentle reprimand ) II v. 1) (d; intr.) ( to strike ) to slap against (the waves were slapping against the sides of the boat) 2)… …
