Any that aren't really skinny because not only would I imagine them to be completely uncomfortable but I think they give off a scene kid vibe which I would hate to have. Besides, skinny jeans make women look sexy, fishnets make women look sexy. A man wouldn't wear fishnets would he?
Also I wouldn't wear jeans that don't fit ie hang closer to the floor than my waist, which seems to be the fashion with the kids these days, and I wouldn't wear jeans that are a stupid colour. However I would wear flares if they came back into fashion.