The tendency for some project or operation to exceed its original boundaries and purpose, usually putting its participants into difficult or unforeseen circumstances. These may cause the original purpose to change, or to become unachievable.
The U.S. at first just tried to get the Viet Cong out of Vietnam, but after years of mission creep, they found themselves fighting the NVA, Cambodians, and others.
by Lt. Commander Data March 22, 2011
by jbecky April 26, 2022
An activity or mission that is most likely going to in in an epic failure such injury, incarceration, or death.
by Mikemikeandmike March 06, 2017
When you do something you know you're not supposed to do (whether it's good or not so good) or when you do something that other people (like your parents) don't want you to do.
by avtor17 February 07, 2018
by Kingimarii4658 March 31, 2019
by UncleMawkus August 29, 2021
A very shitty old beater car that is disposable, unregistered and uninsured that one would use to conduct 'missions' in, such as egging someone's house or conducting paintball drivebys. Once said 'mission' is over, the mission car is to be driven into a lake and abandoned.
by Atomini December 01, 2010