It's easy to assume that having a major television show while attending high school would make you the most popular kid in class. But for twins Tia and Tamera Mowry, stars of the '90s sitcom "Sister, Sister," it was a serious bummer to their social life.

"Having a show and going to school was horrible. Really, really bad. We had no friends," the twins say on the next episode of "When I Was 17," premiering Saturday at 11 a.m. ET on MTV.

The girls' childhood friend Jessica blamed their lack of friends on their busy schedule. "They didn't go to school all the time because they were working on the set, so I'm sure it was difficult for them to form friendships," she explains.

But the girls had a different side of the story. If anyone doesn't remember, "Sister, Sister" was about twins who were separated at birth, run into each other in a department store and move in together with their adoptive mom and dad. "I can remember the kids picking on us. They would literally scream at us and say, 'Your show sucks!' " Tamera recalls.

Tia wasn't about to take that lying down. "Then I would say, 'Well, the checks don't!' " she laughed.

And who has the last laugh now? The twins do, with their current reality show, "Tia & Tamara," bringing Style Network its highest ratings ever.

Bet they wish they were your friends now, girls!

"When I Was 17" -- this week featuring Tia and Tamera Mowry, Jamie Foxx and Chris Bosh -- premieres Saturday at 11 a.m. ET on MTV.