Top Definition
Term used in the Canadian Forces. The same as that's unacceptable except with a professional overtone.
I thought the Captain was going to charge me or at the least councel me. Instead he just said "That's not on trooper."
by LGswift March 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 We'll never spam you.