It is used as a reply for when people say IYKWIMAITYD wich means "If you know what I mean and I think you do" ITIKWYM means "I think I know what you mean"
Guy 1 - Hey you know that girl in the green jacket she is defiantly a milk magnet IYKWIMAITYD.
Guy 2 - ITIKWYM.
Guy 2 - ITIKWYM.
by horse_on_fire September 2, 2014
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