Mark Wahblerg is not so proud of his past as rapper Marky Mark, and drew in a comparison to Justin Bieber when talking about it on The Tonight Show with Jay Leno Tuesday.

"They give Justin Bieber a hard time," Walhberg said during an appearance on the late night talk show. "I mean, my God, I was an absolute train wreck. Wow."

The Transformers: Age of Extinction actor, 42, made his first appearance on The Tonight Show 21 years ago as rapper Marky Mark. Leno could not resist pulling out clips of Walhberg performing a rap number with the Funky Bunch and then sitting down to talk with the host about his wardrobe choices.

"I started wearin' the longer shorts because ... the regular brief underwear, when you run around a lot they get sweaty and tend to get stretched out," Walhberg explained in the decades-old clip about what happens when he raps and pulls down his pants. "You don't want nothin' fallin' out the side."

Laughing after the clip ended, Leno asked Wahlberg, "Is that a big problem? Fallin' out the side?"

"Not anymore," an embarrassed Walhberg quipped.

The actor then joked about having to explain his Marky Mark days to his children one day. 

The Lone Survivor star also addressed rumors about an Entourage movie while talking to Leno. After confirming production, he said filming will take place a few days in January and then the cast will go a hiatus before returning in April to finish shooting scenes. Talking about a release date for the motion picture he said, "hopefully it'll be ready in the fall."

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