A few "They Might be Giants" ones. Forgive me if they've been used, I've not read this whole thread.
"Dr. Worm" in my pants
"She's actual Size" in my pants
"I Found a New Friend" in my pants(part of "Tingertips")
"I Hear The Wind Blow" in my pants
"Number two" in my pants
"Purple Toupee" in my pants
"Wearing a Raincoat" in my pants