Being ignored on a social media platform. Usually by a friend who follows you closely, but envies your sweet photo/updates of your vacation in the Grand Canyon and therefore, refuses to give you the satisfaction of a "like", "favorite" or "retweet."
"How was your vacation?"
"It was great! I went hiking in the Grand Canyon!"
"Oh I saw your Instagram, way cool."
"You saw it? But you didn't like it..?"
"Oh... Yeah..."
"You smiffed me, man! You douche bag!"
by Ace2theface September 4, 2013
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The act of smacking someone hard across the face. Like Will did to Chris.
Man, that guy just walked up to him and smiffed him like a bad child. Yo keep it up and I'm gonna smiff yo ass. That chick was smiffing the hell out her old man.
by alidocious March 30, 2022
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