Top Definition
Slang. Possibly originates from Eastern Canada, specifically Labrador. To be impaired by mind altering substances, specifically hallucinogens.
We got right whapped on 'shrooms and e this weekend.
by Rain November 07, 2004
1 more definition
The sound that's caused by something flat hitting something else.
For example a belt will make a whapping sound when it strikes something.
The paddle whapped the boat when it struck.
by angryatnocommonsense March 10, 2015

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