Rosetta Stoned 

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.

Rosetta Stoned by lmperfect October 19, 2016

Rosetta Stoned 

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.

Rosetta Stoned by Self-absorbed Mannequin January 27, 2009

Rosetta Stoned 

-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.

Rosetta Stoned by rosetta.stonedd January 29, 2015

Rosetta Stoned 

Trying to learn another language after you just smoked copious amounts of marijuana.

Man, I was so Rosetta Stoned last night.

Rosetta Stoned by lokii420 October 30, 2011

Rosetta Stoned 

When you get high with a bunch of people who don't speak your language.

Rick: Dude, all those guys from China were hella chill.
Dale: Yeah man, you got so Rosetta Stoned.

Rosetta Stoned by ThoseGuysFromChina March 27, 2012

Rosetta Stoned 

When someone not ordinarily prone to party, live it up, or be out of control does just that.

Man, Michael Phelps got cold busted getting Rosetta Stoned.

Rosetta Stoned by Otto the Orange February 3, 2009

Rosetta Stoned 

The state of being so high that you begin speaking another language.

Friend 1: Yo, did you know that Marcel speaks Mandarin?
Friend 2: Yeah, but he only knows it when he's high as a kite, man. He was straight up Rosetta stoned last night.

Rosetta Stoned by YungSebs June 2, 2016