To photoshop pictures of celebrities, politicians, or other public figures to display face paint similar to that of the Joker.
Did you see that hilarious .gif with the jokerization of Tyra Banks?
by O.N.T.D. July 18, 2008
The act of drawing dark black circles around the eyes and a red smile on any picture, in commemoration of Heath Ledger's Joker in The Dark Knight.
The icons of commentors on ONTD are often jokerized, a result of jokerization.
by araff July 22, 2008