A scrubs-moment is when one is in conversation, or in thought, and they have a fantasy about something ridiculous, or something that one normal would not fantasize about, similar to the fantasies zach braff'scharacter, J.D., has on the TV show scrubs
Person 1: Dude if you could have one wish what would it be?
Person 2: Hmm.....
(Fantasizes about a room full of chocolate pudding, and dancing chickens...)
....uhh, i dunno.
Person 1: Dude, did u just have a scrubs-moment?