Bladder

Bladder is a hidden statistic that increases by 10% every time you drink a potion, and every minute it is increased by 5% (increased to 30% per minute if standing in liquids). If your bladder statistic is higher than 50% your character says "I feel like I might need to pee". If your bladder level is over 70%, you can urinate, only next to a tree or piece of foliage and your character gets the "Erected" debuff, causing a small movement speed and damage decrease. If your bladder is at higher than 90%, your character says "I'M GONNA PEE MY PANTS!!" and if your bladder is at 100%, you soil your greaves, naming it "Soiled [Name of greaves]" and turning its texture to a yellow color. Having soiled greaves retains the protection value of the soiled greaves and gives you the "Nasty Underwear" debuff, subtracting 1 health per 15 seconds until you bathe in a lake or river. When the player is urinating, he is very vulnerable, taking 5 seconds to do his business and having his defense dropped down to zero when urinating. A urinating player cannot do anything but watch (or smarter option: look away).

Achievements:

Humiliation: Soil your greaves within 10 blocks of another player.

Peeping Tom: be within 10 blocks of a urinating player.