Top Definition
To have sex with a friend or acquaintance's mother; Usually as part of a single, ill-advised, drunken episode. Sometimes resulting in unplanned pregnancy.

Origin: rumors that James Doohan (actor of Star Trek fame) commonly had sexual intercourse with the mothers of his Star Trek castmates (crew).

Mostly used within the phrase "pulling a Doohan"
Hey LeBron, I heard that Delonte West 'pulled a Doohan' last night.
by J Fitzzz September 14, 2010
A person with an incredibly small, and usually bent penis, often a "Doohan" will try to make up for this with fast cars or big muscles.
I thought he was really hot until he took his pants off and I realised he was just a Doohan.
by paulio420 February 19, 2009

Free Daily Email

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

Emails are sent from We'll never spam you.