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The act of ruining a perfectly good TV show with a terrible "twist" during the series finale; referring to the eyeroll-inducing "twist" during the series finale of How I Met Your Mother, where the entire story of how Ted met his children's mother turned out to be an unconscious attempt to ask his children if he can date his ex-girlfriend Robin again. Ted then shows up at Robin's house with the blue horn from their first date/the first episode.
"Man, I used to love that show, but the series finale was such a blue french horn."
"I can't believe how they blue french horned the TV show like that!"
"Remember when that entire season of Roseanne was just a hallucination? What a blue french horn!"
"They thought they were bringing the show back full circle, but really they just blue french horned the entire thing."
by ninjabailarina September 21, 2014
Happy St. Patties Day!