Taking a page from mknod's book with the tag. My dad saw Alice Cooper live over 20 times when he was growing up in Michigan. Apparently Alice played Detroit quite a bit, being from there.
Story goes that this song was originally titled, "Edgy", not "Eighteen."
Growing up all of my dads Alice Cooper records always fascinated me with their crazy cover art. This one for Billion Dollar Babies stands out for some reason:
Enjoy.