hosh, if you can't take criticism in a forum designed for your ideas to be picked apart and criticized, then don't post in it. This is part of the reason the old Is It Worth It? got closed down, and I'm not about to see my lovechild get closed because you can't take some MUCH NEEDED criticism.
You shouldn't even have to ask what the punishment would be to this crime. My expert advice is to not do it, because if that shit gets back to your friend, he's going to probably get fired for letting you back there/in on the phone thing (if he's working at the time) and if you DO do something illegal, he's gonna roll over on you like a fucking dog so as to not be an accessory to a felony.
It may be hypothetical, but use your head.