Top definition
When your ex-significant other suddenly becomes desirable again once somebody else starts hooking up with them. Similar to a child getting angry when someone else plays with their old, used toys.

Also abbreviated as UTS.
Guy that is experiencing the diabolical irony of Used Toy Syndrome: "Dude, I know I'm the one that broke up with her and all but I think I'm getting mad UTS now that that bro over there is talking her up."
by lindorchocolates September 11, 2011
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Apr 22 Word of the Day
When you eat dirt for the first time and leave your family to build a shack in the woods
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawn owning freak
via giphy
by ecogoth December 30, 2020
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