Top Definition
An amount of a substance measured out with a 1/32 teaspoon size scoop (often found in containers of pure stevia extract powder).

Popularized by the creators of the Trim Healthy Mama eating plan.
I only added three doonks of stevia to the cup of tea and it was sweet enough for me.
by charcoaldrawing June 14, 2016
An expression meaning to threaten another by injecting their penis into one's butthole.
Ex. "Stop fucking hard-scoping before I fucking doonk you in the ass."
by J.Pizarsonz March 18, 2015
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