LOS ANGELES, CA  [Tuesday Feb.6.2007]  /Mix103FM.com/ -- Justin Timberlake has admitted that he was high on marijuana when he appeared on a 2003 episode of Punk'd.

During the prank, the singer was convinced that he was being busted by the tax authorities, bringing him to near tears. According to Timberlake, who has admitted to prior pot use, being high only made things worse.

When asked if he was stoned at the time, Timberlake replied, "Incredibly. Yeah, that was a trippy experience. That was why I was completely glassy-eyed. "As a matter of fact, I was like, okay, I got to stop doing this. I don't do that anymore!"

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