How come no group has ever taken up asymmetrical facial hair as a symbol of defiance of authority? From jazz to rock and roll to mods and rockers to grunge and on and on, kids are always trying to distance themselves from their parents' music and style. Here's your chance - there are limitless possibilities. Hey, it's Mo-vember, grow half a moustache. And I don't mean the bottom half. Grow one sideburn, or the left side of a Lincoln. Why not? Because people will think you're mentally ill? (Don't you want them to?)
This is another Niven idea. I never went to the sci-fi conventions, but I hear he kept threatening to show up with half a beard. It'd be disturbing.
Me, I shaved off my beard during my divorce 10 years ago and I never looked back. I've always said, show me a guy with a full beard, and I'll show you a guy who's either over 45 or under 30.