The day that marks the end of Summer and the beginning of Fall. A squirrel is taken from its tree and placed in front of an acorn. If the squirrel takes the acorn it means that it is officially fall.
Did you hear that the squirrel took the acorn on Squirrel Day? That means it's OFFICIALLY fall!
by d_leigh August 27, 2010
1 more definition
A day when you start one thing, then get distracted by something else - repeatedly. Much like a squirrel that is busy hiding nuts then getting distracted and forgetting where it buried them.
I'm having a real squirrel day!
by viennabeo April 08, 2015