Pretending everything is OK when the world is falling down around you.
An imaginary happy ending.
Sticking ones head in the sand.
P1: Things are really bad.
P2: No! Things are great!
P1: Yeah, and Rainbow Skittles are coming out of my butt...
P1: Look, I don't want to hear the bad news.
P2: Ok, then just pretend there are Rainbow Skittles coming out of my butt.