A little old woman foiled the robbery by whacking the thief on the head with her cane.

Something's out of whack here.

My dad thinks my boyfriend is a real whack job.

You're whacked out.

Tom is a whackjob.

She's diabetic, so her blood sugar was already out of whack.

Are you whacked out?

Tom whacked the dog with his cane.

Wearing an upside down baseball cap on your head is pretty whacky.

I'm just about to whack you on the ears with a spoon, you monkey.