a very powerful base, which upon consumption corrodes the lining of the esophagus, and mucus lining of the stomach. If regurgitated, it will do the same on the way back up.
You can get expelled for giving it to another student, if you go to school in the public school system.
Emo Guy: Oh my god! I can't take it! I have to die! But how!?
Goth Guy: Go drink a pint of bleach and cry about it in the dark while you cut yourself, you annoying little bitch!