This ladies Teenage Mutant Ninja Turtles shirt features an image of Michelangelo riding a wave on a surfboard. The shirt reads Cowabunga. The Teenage Mutant Ninja Turtles have some totally gnarly catchphrases, and the phrase that is most commonly used by Michelangelo is "Cowabunga". This is a phrase that was closely associated with surfing, until Michelangelo claimed it as his own. For any fan of Michelangelo, the Ninja Turtle that is always first to set out to have a little fun, this Ladies Michelangelo Cowabunga Teenage Mutant Ninja Turtles Shirt is a must have!