look up any word, like lemonparty:
 
1.
1. Japanese for fat

2. A fat kid that plays gaia online all day and when he

isn't doing that he is looking for little boys to play with

Futois are often in denial of their futoiness
1. Ananta wa futoi desu (you are fat)

2. Alex: Dammit steven your are such a futoi all you do is sit
on your ass and play gaia or look at little boys

Steven: What are you talking about no I dont *munch* *munch*
by Super Nigga January 25, 2008
 
2.
American slang for "fuck you". For use when one is in polite company so as not to offend anyone.
Blaire: Your skirt is a little tight from behind.

Kitty: Fu-toi.
by Jessica Brooks December 05, 2006