There's a dinosaur in my bathtub / There's a dinosaur on the 13th floor / There's a dinosaur on th 13th floor Theres a dinosaur on the 13th floor There's a dinosaur on the 13th floor There is a dinosaur on the 13th floor There is a dinosaur on the 13th floor. Mom, there's a dinosaur in Beeson's Lake / There's a dinosaur on the thirteenth floor There's a dragon in my backpack!