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2.
"Fuck Yeah It's Magic!". Used to definitively endorse the view that something is indeed magical in nature.
Person A: My god, it's magic
Person B: Fuck yeah it's magic!! (FYIM)
by Jorgecomacho August 21, 2009
 
1.
Fuck you, it's magic!
noob: How can some demons and dragons fly with holes in their wings?
anti-noob: FYIM!
by nubular April 18, 2007