This time I'm including the original lyrics I used, as there seem to be several different versions (different orders of the verses) out there.

Santa Claus Is Coming to Town

You better watch out,
You better not cry,
You better not pout
I'm telling you why
Santa Claus is coming to town

He's making his list, checking it twice
gonna find out if you're naughty or nice
Santa Claus is coming to town

He sees you when you're sleeping
He knows when you're awake
He knows when you've been bad or good
So be good for goodness sake

O, You better watch out,
You better not cry,
You better not pout
I'm telling you why
Santa Claus is coming to town


O, You better watch out,
You better not cry,
You better not pout,
I'm telling you why
Santa Claus is coming to town

He's making his list, checking it twice
gonna find out if you're naughty or nice
Santa Claus is coming to town

He sees you when you're sleeping
He knows when you're awake
He knows when you've been bad or good
So be good for goodness sake

O, you better watch out

You better not cry
You better not pout
I'm telling you why
Santa Claus is coming TOOOO TOWWWWWN!

Second verse...not quite the same as the first. *g*

Voldemort Has Come Back to Life

You better take care,
If you are a spy,
You better beware,
I'm telling you why,
Voldemort has come back to life!

He burned the Dark Mark, made your blood boil,
(All to find out which Death Eaters were loyal.)
Voldemort has come back to life.

He's watching when you're teaching,
He knows of Grimmauld Place,
He is a skilled Legilimens,
Hide your thoughts, for goodness sake!

Oh, you better take care,
If you are a spy,
You better beware,
I'm telling you why,
Voldemort has come back to life.

Oh, you better take care,
Ol' Severus Snape,
You better beware,
Or you'll get in a scrape!
Voldemort has come back to life.

He's reading your thoughts; he's really scary,
Watching you teach, so be nasty to Harry!
Voldemort has come back to life.

He sees you at the castle,
He's watching in the dark,
He might suspect your loyalty,
So you'd best obey the mark!

Oh, you better take care,
If you are a spy,
You better beware,
I'm telling you why,
Voldemort has come back TO LIFE!

End.