Why is there a slime beast in the bathtub?

there is a tub in a bathroom, somewhere, sometime, that is filled with green goo. beware this tub.

Shrub with legs

Fern with legs.

a young fern wearing red boots

tree wearing red boots

trees have learnt to walk, but they're cute so it's fine at the moment

looking at a kawaii tree strutting with hot legs

cool guy in high heels pulling up his pant leg to reveal his sexy legs and red high heels