Top Definition
1) a playfull insult between friends
2) a person who gets really horribly drunk on a regular basis
1) shaun, pick it up ya mash head!
2) Johny Mase stop drinking you mash head!
by BaBs February 09, 2004

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The Urban Dictionary Mug

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The Urban Dictionary T-Shirt

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When you and your buddies whip out your fatties and joust with them.
Eric and Jason were quite excited and decided to mash heads about it.
by DongToucher August 23, 2011

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