Priceless Letters To Santa

What's the P.S. on this letter to Santa?

Every parent enjoys reading through their kids letters to Santa, right?!  Not only are they very discripive about what they would love to recieve from Santa on Christmas morning, they also use their best penmenship.

They list off all of their favorite toys...in detail.  They say please and thank you, Santa.

And some kids even add a P.S. at the very end of their letters to Santa.  What possibly could the P.S. be about?  Maybe they forgot to list a toy or could it be they forgot to say thank you?  Or could it be they want to put a smile Santa's face?

See for yourself :)