<human>: This actually happened today. Ate breakfast, washed my breakfast dishes. The sink wasn't draining; no big deal, I'll just empty the drain basket in the trash. Still not draining. I try plunging it, which does nothing except bring up slimy black things that should have never seen the light of day. Called my landlord, who told me to try Drano, so I go get some Drano and follow the directions. The sink is half filled with disgusting water, but I have been assured that Drano is designed to sink through water. 

Still nothing, and now, I go into the bathroom to wash my hands and now realize the drains are connected because both sinks are now filled with oily black water with bits of hair and drain scum floating around. I get the bright idea to empty the water through the nut in the bathroom u-bend.

I get a wrench, a bucket and a bunch of towels and slowly slowly open the nut and...BOOM, the gasket breaks, and there is a flood of Drano-scum-dirty-hair water flooding over my hands and feet. 6 towels are ruined, my hands and feet have been covered with Drano, I have to call Poison Control, I have no idea how much water has gone down to the apartment below mine, and there are rafts of mold-grease-scum floating around the bathroom.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: Don't deal with plumbing unless you're a plumber. Also Drano, never again. I was lucky to not get chemical burns and I was lucky my cat was not in the room. Also I'm a dumbass.