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2.
an unpleasant, stank feeling that comes about unexpectedly; basically anything lame or bad
I feel buttsy. I think I'm coming down with something.

Anyone who has 2 Masters and doesn't use them is completely buttsy.

People who clip their nails on the subway are buttsy.
by wens and childofleroy May 10, 2006
 
1.
One who has a large or voluptuous butt. Opposite of the word "busty" meaning a large bust. Buttsy refers to one's large butt.
I am having a hard time finding jeans that fit in the butt. They are all just too tight in the rear. I guess I am just too buttsy.
by fsulaurie November 22, 2009
 
3.
A feeling of stankness
I'm feeling rather buttsy. I think I'm coming down with something.
by Wensima May 12, 2006