Top Definition
Crazy, but not in an inherently bad way; a bit loopy or trippy. People who are hearing xylophones can be a lot of fun to hang out with.
No guys, I'm serious! I swear to god there was a blue light on the wall over there just a second ago.
Man, you're hearing xylophones.
by HoboAC November 12, 2007

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The Urban Dictionary Mug

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The Urban Dictionary Mug

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