EXAMPLES FROM THE WEB FOR WHACK
This gentleman said he never told a fellow what ailed him until he got his whack.
There was a whack as one lump hit the boat, and a grunt as the other struck some man.
Virginie had caught her a whack with all her might on her bare arm, just above the elbow.
But on most of the occasions she only caught some whack for her trouble.
"We won't get much of a whack at the Jerries," the colonel said rather testily.
Oo may whack my boat all to pieces, baby—come back to Janey!
"And have first whack at the cakes; I think not," Daphne replied firmly.
Then he looked at the pump and he gave it a whack and he kicked at the spout and said "Shucks!"
The headache is merely nature's signal that something is out of whack.
Much obliged to you, Mr. Rowley, for givin' us first whack at it.