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it's a combonation of 2 different phrases.... "thing a majig" and an old Marine Corps word that we used to describe something when we couldn't think of the name of it "who'yah".
shanna: bay bay, where u put my cellphone charger?

scooby: it's sittin' on top of the thing'a'ma'ya (box) on the kitchen table.

scooby: say bruh, hand me that thing'a'ma'yah (wrench) so i can take this bolt loose
by big scooby March 29, 2010
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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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