(Adjective) A way to describe a negative or passive aggresive comment. Could also be used to describe someone's shitty attitude towards every aspect of life. When Duncanisming you can gurantee that no work will get done and all problems will get worse.
by Lost.In.The.Sauce. February 16, 2019

Phillip: "Did you see them?"
Average Joe: "Yeah they all looked the same!"
Phillip: "The Duncans or what?!"
Average Joe: "Yeah they all looked the same!"
Phillip: "The Duncans or what?!"
by Philpac October 27, 2008

a strange little man with a love for puns and being all-around obnoxious. stay away from him at all costs.
Duncan: H-
Me: don't. just don't.
Me: don't. just don't.
by duncanhater000 February 13, 2018

Doing A Duncan is when a group activity is organised such as going to the movies or an ice hockey game and forgetting to collect someone on the way.
by Busta Nutt September 26, 2010

by nfie August 26, 2011

by M. M. M November 1, 2016
