Before America was swooning over The Situation's abs, they were Scotch-taping posters of Usher's hot bod onto their walls. When the singer/songwriter burst onto the scene in the '90s, his popular dance hits and smooth moves helped him become one of the hottest R&B artists in the business. But was the megastar a stud or dud in high school? He answers that one by saying, "When I was 17, the abs came to life." Check out the sneak peek video, then tune in Saturday at 11/10c for an all-new episode of "When I Was 17," also featuring B.o.B and Ne-Yo!