An acute condition that occurs while hanging out with native speakers, in which you realize that all of the hours you logged with your Rosetta Stone software in preparation for your trip to Mexico are disappearing from your consciousness as your new amigos keep serving you tequila. The surest sign of this condition is the glazed expression on your face when someone asks, "Como se llama?"
Last night I met a lot of nice folks at a bar in Mexico City who got me so Rosetta Stoned that I could not remember how to ask, "where's the bathroom?" in Spanish.
by pelirroja February 5, 2011
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When you are so high you think you can understand another language when reading the subtitles of a foreign film
After an evening of hot boxing the abandoned car the guys gather around to watch Paprika.

Conor: Holy shit guys! I can speak Japanese!

Aaron:... what?! No, dude your just rosetta stoned!
by Chief Blazin Buffalo May 8, 2010
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Someone you can barely understand when they are stoned, or someone who tries to speak a different language when stoned.
It's hard to understand Ben when he smokes to much, he gets Rosetta Stoned.
by esk1mo April 24, 2018
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When your friend gets so high he/she passes out that you write hieroglyphs on their face.
Tyler got so high he passed out and we Rosetta stoned him.

Or

Mike got Rosetta stoned last night!
by Neon bananas March 21, 2019
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1: Being so high that you begin speaking another language.

2: A song by the Progressive/Psychedelic Metal band "Tool."
Guy 1: What's your favorite Tool song?
Guy 2: Rosetta Stoned

Guy 1: Hey dude.
Guy 2: Hola senor.
Guy 1: Are you Rosetta Stoned again?
Guy 2: Si.
by lmperfect October 19, 2016
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Side effect of spending too much time using your Rosetta Stone software.
Symptoms are similar to that of smoking a generous amount of high quality marijuana.
After three hours of learning Japanese on my Rosetta Stone software, i was so Rosetta Stoned that I ate a whole pizza and passed out for 12 hours.
by Self-absorbed Mannequin January 27, 2009
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-Blazed while listening to a Rosetta stone recording, or any language learning recording.
-Bro I was so Rosetta stoned while listening to my Spanish recording last night.
-I learned Vietnamese while I was Rosetta stoned yesterday.
by rosetta.stonedd January 29, 2015
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