Because the Mummy's always saying, "I'll be in the crypt tonight."
Because their daddies were mummies.
A dedipus complex.
Where o where are you tonight? Why did you leave me here all alone? I searched the world over and thought I found some one You met a zombie and pblblthpth you were gone.
Your mommmmmmmmmmmmmmmmmmmmmmmmmmm
They both paralyze Superman
SCAR-L
Because he doesn't want to be around the crypt tonight. (you can tell i made that up)