BUT THEN YOU HAVE A SHIT WATER DRIPPING PIECE OF PLASTIC I AM NOT AMUSED

No, because the only way for the water to touch the plastic is for it to already be overflowing.
This traps a layer of air between the plastic and the water creating a section. So when you push the air down, it’s forcing the water through the pipes.
This is actually really cool!

interesting

Arthur Weasley is so proud of you, Japan.  Countering a regurgitating toilet spell with a simple sheet of plastic.

This is Korean though isn’t it? Like the writing is in Korean like….?