Asylum Street Spankers have an excellent parody rendition of "Tie a Yellow Ribbon," called "Stick Magnetic Ribbons on your SUV." (Not safe for work)
"Oh Stick magnetic ribbons on your SUV, keep your apathy and get off scot free. If I don't see a ribbon on that SUV, I'll call you a red, wish you were dead, and put the blame on weed, if I don't see a ribbon on that SUV. Please don't send me to Iran and I sure don't wanna see Afghanistan. Any day now I could be another grunt sporting a stump, so buy another ribbon while you're paying at the pump."