Peeing in sleep, of course, even when the character is awake.

WET PANTIES

Wet underwear, and diapers, bikinis, pantyhose are all OK.

SLEEPING, PEEING SELF

Although it is asleep by default, there is still a certain probability that the eyes are open.

Use this tag to force the eyes to close and sleep.

PEEING PEE

Generally it's just urine leakage, if you want to pee in your sleep, use this.