Reference to "Of Mice and Men", namely the ending where George tells Lennie to look at the rabbits so he can shoot Lennie while he's not looking. Basically means the same thing as go play in traffic; go jump off a cliff, die, etc. in addition to calling the person a retard. Could also be interpreted as a threat.
by Kulor May 25, 2005
by chadm October 13, 2007