Getting one actor confused with another when seeing them in a movie or show, orginated when people saw Ian McKellan as Gandalf and insistently said "Hey, it's Dumbledore!" and were humiliated when proven wrong.
Seeing Jon Favreau and thinking it's Greg Grunberg and when proven wrong say "D'oh! I got Dumbledored"
by pricklepants June 27, 2015
A half assed holiday sometime around Christmas but never on Christmas, that is celebrated with family members that you simply do not like; A "lesser" Christmas.
by Pricklepants October 19, 2013