Top Definition
Pretty much Cillian Murphy acting like a complete herp a derp in just about all of his films.
Cillian Derpy crying in Watching the Detectives should be enough to prove the point.
by cillianderpy September 25, 2010

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.

×