The ol' dog and pony show

What exactly does that mean, anyway?  The dog and pony show?  Is it to give one the run-a-round?  To put on a show for someone?  I googled it and got even more confused.  Someone enlighten me please?  Why am I talking about this in the first place, you ask?  Well, because of this cute little plaid pony coin purse that I found down at Lillie's Five and Dime!  She definitely ain't giving us the old dog and pony show with this one (at least, I don't think so...) with the lush suede feeling fabric and fancy red pony on the front.  Handmade in small batches by Lillie herself, this coin purse is a little bit country and a little bit glam.  Find it amongst notecards, pretty pillows and more all down at Lillie's Five and Dime!  10% of all sales go to the recovery in New Orleans, so hop on that pony and shop away!