I trim my eyebrows with scissors. Comb against the grain very slowly, and snip all the hairs that stick up beyond the comb.
I have Andy Rooney eyebrows, very long and curly. I also have a bizarre twisted hairy scar in the center of one brow from a biking accident. I had them waxed once, but then realized that simply trimming them made them look just as neat and tidy. (and it's a whole lot cheaper and doesn't hurt my delicate skin)
I do have 3 or 4 persistant rebels that grow way outside the brows that I pluck.
I shave my upper lip, cuz dang it I have a moustache! I think getting that waxed would hurt me, too. My skin isn't very hearty.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson