Some of you may recognize the title of this cache listing as a phrase from childhood games of hide-and-seek, when everyone still hidden is asked to come out of hiding and return to home base. The phrase is a lot less effective when a geocache refuses to reveal itself, but hopefully that will not be a problem with this hide.
If you are looking for it at the warmer times of year, there is a good chance of you seeing Ollie (or rather, an ollie) firsthand.