Top Definition
1. an idea that takes a long time to understand.
2. a concept that takes a long time for market acceptance.
1. calculus was some real mental jerky.
2 that smart payment plan was some mental jerky but now i'm saving lots of money.
3. anything written by robert anton wilson
by david engelman May 17, 2008
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.

×