Changing the Lyrics from a Christmas Song?

Can anyone post a christmas song for example "rudolph the red-nose reindeer" but have the lyrics changed up abit (nothing nasty or anything in it)

and if you know any sites that would be extremly helpful.

all to jingle bells:
"jingle bells, batman smells, Robin layed an egg! The batmobile lost its wheels, and joker got away.. HEY ".. repeat... ha ha ha