Sexual activity in which urine is involved. The presence of urine is generally considered erotic for those indulging in the urine related activities.

In BDSM terminology, refers to sensual or erotic play involving bodily fluids, typically urine, saliva, and less commonly, blood. Considered 'edge-play', because it is obviously somewhat unhygenic.

Watersports lovers enjoy not just the flesh of their partners but also the secretions that flow from it. This fetish may also include a fascination with the one function (peeing) that their partner has been doing since birth.Generally speaking, for men the sensation of liquid passing through their urethra is exactly the same when they ejaculate as when they urinate. Even though men know the difference of whether they're cumming or urinating, the sensation is the same. Therefore, for watersports lovers, one action reminds them of the other. Likewise for females, their urethra opens and urine flows out of and among the sensitive lips of their body.

The act of spitting water out of your mouth. Usually done in a shower.

A sexual paraphilia or fetish. Person gets aroused when sees someone wetting his/her pants or just becoming wet (for example under the shower or in the pool).

When subject A urinates in the face of subject B. Not only does it cause a watery, glissening face, but also may spark memories of nostalgia of one of the subjects' childhood memories of swimming in the pool, playing games with dear old decrepid Granny.

Taking the piss out of your lover