Blink, and you’ll miss it
There is a scene in which a bulletin board is seen in the background in Wreck-It Ralph. There are several sheets of paper and a few notes strewn about the table. Then, finally, there is one of them, with a lipstick kiss on it.
The great majority of Wreck-It Ralph viewers would have no reason to believe this. However, it’s a subtle nod to the lesser-known Disney short Paperman. It’s about a man on the lookout for a woman who left a kiss on a piece of paper. Someone should inform that individual that we have discovered it.