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A slang word for the very powerful prescription drug Alprazolam also know as Xanax in the Benzodiazepine family. They are highly abused and very addictive with a street value of 2$ a milligram.

The term "Yellow School Buses" gets its name from the 2mg XANAX pill which is shaped like a bar sometimes are yellow. The pill can be broken into 4 pieces each equaling .5 milligrams. Hence the name "Yellow School Buses"
Kenny: I woke up in a someones house and cant find my cell phone, wallet or my pant's and don't remember a damn thing.

Ivan: Must of been those Yellow School Buses you took.
by Ivan S Tessmer January 24, 2013
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Jan 25 Word of the Day
Oh you’re just being alive? I’m horny too
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by ecogoth January 01, 2021
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