IFSY

Stands for I'mma Fucking Smack You.

Commonly used in chatrooms to express violent retribution when infuriated with another person's behaviour or ignorance.

Can be used in conjuction with the words "slap" or "punch".
Person1: "Broccoli is really disgusting."
Person2: "IFSY, Person1."

Person1: *Spam* *Spam* *Spam* *Spam*
Person2: "I'mma fucking smack you, Person1."
by ODphi March 12, 2009
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