Yeah, letting someone who's pissed off give you a shave is definitely a bad idea! Especially if he/she is wielding a straight razor!
Personally, for now, shaving is part of my quiet time. My room mates are both at work when I shave so I can give my dime as much time and attention as I want. Still, though, I'd love to get my bf to shave my head for me and massage my scalp. That would be so freaking awesome!