>I was just curious, I absolutely do not want to make any type of virus, trojan, or malware.

I have to admit, I believe you (because i've helped you in many previous threads). And well, we all find ammusment in differen't things, making pranks for a friend (as long as it doesn't damage their system like Duoas said) isn't too bad if it gives a couple of laughs. It will be possible, but I don't know any ways of doing it off the top of my head. Just.. don't over-do it