Oh Mr. Jack O Lantern

http://www.youtube.com/watch?v=zIS67ZvoBDc

Caitlin has learned a new song at school to celebrate Halloween. I believe the lyrics are something like this:
Oh Mr. Jack O Lantern, you're such a silly sight
with your crooked teeth and squashy nose and
your eyes come from a light. I put you in my
window, and when I go to bed, the people on
the street yell "punkin head".
I'm not confident on the last line :) Enjoy!