Top Definition
To hit an ejaculating penis upon an object or person. Usually done by a man upon a woman.
Steve sperm whacked Donna.

Terri was sperm whacking Lisa with Roger's pud.
by Caesar Anonymous IV November 17, 2010

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The act of hitting an ejaculating penis upon an object or person. Usually by a man upon a woman.
Walter gave Mary a sperm whack between her cleavage.
by Caesar Anonymous IV November 17, 2010

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt