look up any word, like half chub:
 
1.
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
 
2.
It's the opposite of krab, and means ultra uncool.
Oh you lobsta retard!!
by Llama Jagua Kitchenette September 23, 2010