Ludacris, Pete Wentz, Jillian Michaels Get Nostalgic On 'When I Was 17'

'My father did not know how to cook,' Luda says of working at Pizza Hut for money — and meals.

Ludacris once delivered pizzas instead of rhymes. Instead of motivating people to live a better life on "The Biggest Loser," Jillian Michaels wasn't very motivated to hang out with anyone in high school. And Pete Wentz kicked around a soccer ball instead of playing bass.

How do we know all this? Well, they dished all about it on the latest episode of MTV's new show "When I Was 17," airing Saturdays at 11 a.m.

While he's the face of Fall Out Boy these days, Wentz didn't think he'd find fortune or fame as a rock star. In fact, he thought he'd be the next David Beckham. "I played soccer, but I wasn't really a jock," Wentz said in the episode. "It was something I was really passionate about. I feel like I had a magical connection with the ball. I wanted to play professional soccer in Europe."

Ludacris also had an alternative career back in the day: He used to work at Pizza Hut. "Not only did I get a job at Pizza Hut to get a little extra change in my pocket, but I also did it so that I could eat," he explained. "I lived with my father. God bless my father, I love him to death, may he rest in peace, but my father did not know how to cook. Simple as that."

It seems that food service is quite the popular industry for 17-year-old future celebs. Michaels, admittedly, wasn't very good at it though. "I began looking for jobs. I became a waitress," she recalled. "I was the worst freakin' waitress in the world. I was not very good at customer service. [I was like,] 'Oh, you don't like that? Sorry.' Waitressing was not for me."

Don't miss "When I Was 17," airing Saturdays at 11 a.m. on MTV!