A term used to put others in their place, designed for people who do not wish to use the more common terms of pwn, or pwnage, widely used in the gaming world.
Literally it means: Sandwich Making
Nipple Flicking Action, but its meaning delves much further than that, into the rivalary that can occure between fellow gamers.
Pronounced: "Smin-uff-idge"
"That was pure Smnfa'ge Jamie"
"I just Smnfa'ed Hamish in the A...
to the max!!!1"
"
One time, I caught Andys sister
getting changed, and I thought... damn, she's Smnfa'in hot"