Top Definition
Anyone named Sebastian who happens to also be a bastard (literally or figuratively)
dude1"whats that asshole's name again?"
dude2"uhhh sebastian I think."
dude1"you mean sebastard"
by sebastian crucial December 12, 2006

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someone who is being mean, rude, bastard, etc
"god jen you are being a real sebastard, why did you eat all of my tootsie rolls?"
by jrap March 15, 2008

The Urban Dictionary Mug

Lotsa space for your liquids.

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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