Urolagnia
Urolagnia (also urophilia, undinism, golden shower and watersports) is a form of salirophilia (which is a form of paraphilia) in which sexual excitement is associated with the sight or thought of urine or urination. The term has origins in the Greek language (from ouron, urine, and lagneia, lust).
Overview
As a paraphilia, urine may be consumed or the person may bathe in it. Other variations include arousal from wetting or seeing someone else urinate in their pants or underclothes, or wetting the bed. Other forms of urolagnia may involve a tendency to be sexually aroused by smelling urine-soaked clothing or body parts. In many cases, a strong correlation or conditioning arises between urine smell or sight and the sexual act. For some individuals the phenomenon may include a diaper fetish and/or arousal from infantilism.
Urolagnia is sometimes associated with, or confused with, arousal from having a full bladder or a sexual attraction to someone else experiencing the discomfort or pain of a full bladder, possibly a sadomasochistic inclination.