I tend to eat very spicy and in large quantities. After some time my body must have learnt to digest the capsicum because it now never bothers my butt. Unfortunately now when I overdo it , I piss out the spice. It's not nearly as bad as the fire shits, as long as I wash up with soap and water after every pee for about six hours after eating really spicy.

PS: There's an Indian grandma that cooks at a close by restaurant that took it as a challenge when I said I wanted it "five stars" (max heat). It's what I ask for everywhere else, but this lady took it to heart. I pissed Mace for two days straight but it was delicious.