Piss

Frisk had been standing here since this morning when his mother was showering, he hadn't used the bathroom yet. Walking up he decided to let his frustration go, grabing his penis he urinates on his poor mother covering her body just like the hero in the comic he read (it wasn't a comic). Seeing her body coated in wet yellow fur he still had some in the tank, knelling down he placed his member right on her lips by her open mouth and let it go filling her mouth with the golden liquid.

Seeing his mother in such a state awakned something within Frisk, he removed his penis from her mouth and looked at the filled orfice. Doing something he knew was wrong he returned to her house, entered her kitchen and pissed in the teapot filling it with piss. He got up and left the ruins.

Toriel woke up soon after, feeling something in her mouth she swallowed believing it to be water not realising her child used her as a personal urinal. She got to her feet sopping wet yet didn't think much of it, returning to her home she undressed and lounged in the living room taking a sip of her tea (it aint tea). She sat for an hour before going to the shower and washing the sweat off her body.

Returning from the shower she picked up her dress and put it on not realizing how i looked, her crotch was open and the dress ended right under her nipples. She notices a box with a note, 'let's be heroes together.' Seeing this Toriel opened the box to see it's contents, contents being a small cape with a mask made from her lace panties.