Biff opened his mouth and said "I'm the most popular guy in school. Even the kids I bully like me. Every girl in school has a big crush on me, including all of the female teachers. Every guy in school, including the male teachers, wants to be like me. The teachers all like me so much that they give me straight A's, even if I get everything wrong. None of the school teachers or principal's gives me any trouble about skipping school or mouthing them off."
Biff figured that would be enough to test his theory about what the bracelet seemed to do. He left the washroom, on his way to his home room class.
On the way, every girl was looking at him, and blushing. They seemed to be torn between looking at his face and blushing, and staring at his crotch. And lots of them 'accidentally' brushed him with their hands. One even bumped into him and groped his pric while they were separating. Biff knew the bracelet had worked!
Biff also noticed that a lot of guys in the school were different now. Most of the guys were more muscular than they had been. And a bunch of them were coming up to Biff with big smiles, asking him for his advice on weight lifting and modeling. They all seemed to hang on his every word, basking in his presence.
A couple of the guys he bullied were even more muscular. One of them came up to him and gave Biff his lunch money, a big smile on his face when he did. He told Biff that Biff deserved it for being such an awesome dude.
Biff walked into his home room class with a big smile. The two hottest girls in the class had saved a seat next to them for him. The three of them were at the very back of the class.