Hitchiker was quite funny... May need to read the book myself.
"I Love You Because" (A Monster Duet)
You're fat and lumpy, Ugly and grumpy, Hairy, green and grimy, You're big and smelly, Sticky-out belly, Oily, wet and shiny, And that's why I love you.
You're cruel and grim, You do people in, You're eyes are small and beady, You're nasty and sly, You cheat and lie, You're evil, mean and greedy, And that's why I love you.