Commonly known as toothache plant, or "electric daisy," Lemon Drop contains a natural analgesic which numbs the tongue and gums, relieving toothache pain. This numbing sensation arises from chewing either the flowers or leaves. They're pretty startling on their own, but can be used in cocktails, or to prank your friends.
Want to learn more? Look up Lemon Drop on Wikipedia.
STORE: In a dry place