1 definition by midnightflame

Top Definition
Insane Monster Period. When your monthly cycle is particularly bad and/or driving you insane.

Pronounced like "imp", like the tiny devil that it is (not I-M-P like an abbreviation.)
Why are you stumbling around like a drunken psychopath?" "Oh, I'm just going to pass out from blood loss from this stupid IMP.
by midnightflame August 06, 2011

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.