A variation of the word fatty. Commonly used by retarded people and those diagnosed with dyslexia.
Shut the fuck up faty!
A person who is acting irrationally or inexplicably.
Wow, that person is trippin faty.
A girl who works out every day but still gains weight. Looks good but that f aint a ph u know what im sayin. Soon the i will be dropped and she just fat. So watch it! But while a fati she good as home cookin!
fati - Someone who is overweight, and is meant in a comedic sense. A comedic misspelling of the word "fatty."