'ZAT YOU SANTA CLAUS?

Gifts I'm preparing for some Christmas sharing,
But I pause because,
Hanging my stocking I can hear a knocking.
'Zat you, Santa Claus?
Cold winds are howling, or could that be growling?
My legs feel like straws.
My my oh me my, kindly would you reply?
'Zat you, Santa Claus?