My hands are unnaturally hard and leathery from playing with heavy spiky-gripped weights for 2 years. The calices on my palms get about 1/3 of an inch high and when the skin peels off of them they are like little white knives. My hands themselves are so hard and unyielding that my nether regions are essentialy being rubbed with sandpaper.
If I ever get a girlfriend shes going to be very unhappy with me. ;( I'll have to get rid of my lovely calices.