A person who is foolish and brings rejection and embarrassment upon themselves in full view of their social group or the general public. This phrase was first coined by a nerd in Australia, and is a conjunctive of dumb and jumbotron.
by Pidgie February 25, 2016
by Ymauerq March 16, 2008
by Andre2698 September 19, 2017
A large TV screen that messes up, usally said during schooling or professional meetings to add a bit of humor.
by Bob Wats February 10, 2020