Acid
Mix spiders into alcohol to make acid. Spiders have a little bit in them already, but if you really want to make it potent, smash them in some whiskey to make a deadly acid that will rip through anything.
Imagine crushing up some spiders into alcohol. Watch it turn green. It's going to eat through the beaker! Quick, do something!
さん
す
None
You're trying to find a container for this acid when Santa-san (さん) bursts through your wall. He frowns down at you. You're on the naughty list now. You killed spiders AND made dangerous acid? Ooooh you're in trouble.
It’s Christmas morning. Instead of gifts, Santa-san just throws a piece of charcoal at your face. Feel the charcoal smash into your face and explode into acid, burning you. Santa-san runs away laughing. Ho ho ho!