Isopropyl alcohol
Isn't it just a little strange for a bottle of isopropyl alcohol to have a safety seal on it, saying "Sealed for your protection"? Isopropyl alcohol doesn't exactly go bad, and you're not supposed to drink it, as it's already a poison. Yes, there are ways of tampering with it that could make it dangerous to people, but it's not exactly a bottle of pills or something.
