It would take me too long to download the video (dial-up.) I wish I could see this video, but from a teacher's perspective, I'd want to know: are these kids regularly pains in the asses? I have kids who ask me every day if they can go to the bathroom. I've noticed that there is an inverse relationship between a student's grades and the frequency they want to leave the room to use the bathroom. I'm amazed that no profound medical discovery has ever been made.
Calculus class: approximately 2 or 3 times a year, a student needs to leave to use the bathroom.
Pre-calculus class: 2 or 3 total trips per year
physics class: 2 or 3 total trips per year
Remedially paced algebra class: 2 or 3 kids ask per period. Weird, huh? Yeah, my answer is usually "no" except during the last 10 minutes if they're working on homework or a quiz. "If your quiz isn't finished because you're gone, that's going to be your problem."
Incidentally, I was going to comment on your grammar, etc., but didn't want to sound like I was thread crapping. Is this due to a disability? English as a second language? Or poor teachers in your school?