How do you finish riddle school 2

Okay, first you collect some quarters around the room. (they're the little gray dots) Next, you borrow the guy's whistle next to you. It will make the teacher faint, then you leave the room. There should be a locker somewhere with a quarter in it. Next, you go to Mrs. Sleep's room. You click on a desk or something, and it should give you a like, cream thingy or something. you go down to the end of the hallway, with the big fat guy and click on the vent. You use the cream to open it and take the toilet paper. Go into the bathroom ( the boy's bathroom, by the way) and give the guy some toilet paper. Then, get the mop and take to the janitor's office, and give it to the janitor. He, in return, will give you a dime. That's pretty much all I know.