look up any word, like fap:
 
1.
FAGM
fag-um

Acronym for Fat Ass Gay Matt. This describes your typical friend named Matt, especially if they are extremely anal and somewhat portly.
Speaking to Matt: Hey FAGM, quit mopping the floor and fetch me drink!
by Rita Bjorkland February 06, 2008
 
2.
fag-um

Acronym for fat ass gay matt. This describes your typical friend named Matt, especially if they are extremely anal and somewhat portly.
Speaking to Matt: Hey f.a.g.m., quit mopping the floor and fetch me a drink!
by Giovanni Cammarata February 09, 2008
 
3.
fag-um

Acronym for fat ass gay matt. This describes your typical friend named matt.
speaking to matt: hey F.A.G.M., fetch me a sandwich, yo
by Perry Bernstein January 28, 2008
 
4.
Basically when a homosexual or someone who appears that way has a spasm occasionally associated with glee
Fernando:OMG! glee is the best show ever *continues to text

Alex:what just happened
Amanda:oh he had a fagm
Alex:like a gay spasm

Amanda:yup
Alex:ha ha aw man that explains everything
by Alexander Days February 19, 2011