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Inspired by the universally disliked banana-flavored runts, "runtsbanana" is used to describe something particularly foul tasting or generally bad/unpleasant.

Can also be used as a verb to describe someone acting in a way that is uncalled for and ruins everyone's time (to "go runtsbanana").
"Did you try Mary's casserole? That shit was runtsbanana."

"Yeah, the dinner party was going great until Mary got wasted and went runtsbanana on everyone."
by blackwolf333 June 29, 2012
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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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