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1.
n. a fat person who thinks that they are emo. they try to wear skinny jeans and have angled hairdo's, but can't pull it off. beware of muffin tops caused by skinny jeans.
A: Look at that fatmo!
B: I know, they're trying so hard to be emo!
A: Don't look. They might eat you!
by Fatmo_Luvr May 23, 2009
 
2.
1. A person or thing who has the traits of a fat person.
2. Someone or thing who eats like a slob.
Damn, look at Brien eat, what a fatmo!
by C N May 15, 2006