Top Definition
1.The most gangsta creature to ever exist on the face of the earth!!!

2.The 'in' way of spelling lobster.

Note: a lobsta is NOT a crayfish!!
Lobstas are so gangsta man.
by Gracii July 15, 2008
1 more definition
It's the opposite of krab, and means ultra uncool.
Oh you lobsta retard!!
by Llama Jagua Kitchenette September 23, 2010

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