Blue monkey is actually mentioned in the film but not in any way that makes any possible sense. At one point,some kids are wandering thru the deeper levels, exploring. They begin to discuss what they'll find down there and one of them (a girl) says she bets they'll find a blue monkey.Yes, thats it. Totally inconsequential to the story, the only sad connection to the title, and no idea why she would suppose she'd find a blue monkey in a hospital's basement.I'm embarrassed for having remembered it but somebody had to remember I suppose!