1. Penis with a bulbous deformed head that is disproportionately larger than the shaft., 2. Used to describe a loud or obnoxious person. Most effective when preceded with a traditional expletive, (i.e. "You fucking Yam-hammer"), 3. An aggressive consensual sexual act that involves a sound beating and/or pummeling.
1. I'd love to yam-hammer that bitch!

2. That dude is a such a yam-hammer!
by Paintmonkey March 14, 2007

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Top Definition
n.) A fully erect penis, usually one of staggering sive and girth.
Suzy gagged on Neil's yam hammer, despite being an accomplished cocksucker.
by Blenderhead91 April 03, 2009

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1. Penis with a bulbous deformed head that is disproportionately larger than the shaft., 2. Used to describe a loud or obnoxious person. Most effective when preceded with a traditional expletive, (i.e. "You fucking Yam-hammer"), 3. An aggressive consensual sexual act that involves a sound beating and/or pummeling.
1. I'd love to yam-hammer that bitch!

2. Seven is a twisted fucking yam-hammer, and someone should whip his ass.
by Paintmonkey March 13, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

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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