I usually wear slim/straight jeans, but I am considering ordering a skinny fit pair online. I've heard they do not fit "real" tight? I have been told my nuts are medium sized, so I'm wondering if skinny would still be comfortable on my junk?
Go and try them on in person if you can. Life is too short to wear jeans that aren't comfortable. I don't have skinny jeans, I have a pair of slim ones and it's a gigantic pain in the ass to gets things out of or put them back in the pockets.