Already on the Secret Santa thread from The oldpooparoo. Worth repeating.

You better watch out, whatever you say,
There's a big van parked over the way.
Santa Claus is listening to you.

He's watchin your house all the day long,
Makin a list of what you do wrong.
Santa Claus is checking on you.

He knows if youve been washing your naughty bits and all;
He's put a 2-way mirror right in your bathroom wall.

He's under your bed, tappin your phone.
Better give up, youre never alone.
Santa Claus is spying on you.