He whopped someone on the back to get their attention.
whop a door
Frequency:
60
%
She whopped the door shut in frustration.
whop a ball
Frequency:
45
%
She whopped a ball across the field with great force.
whop a fly
Frequency:
30
%
He whopped a fly with a rolled-up newspaper.
Idiomatic Expressions for whop
Phrase: whop someone upside the head
Meaning: to hit or strike someone on the head
Usage: He got so angry that he threatened to whop his brother upside the head if he didn't stop teasing him.