Personalized Herpetology Is Ribbiting White Text Youth Long Sleeve T-Shirt. Herpetology is ribbiting text with the word ribbiting replacing the word riveting and a happy frog is a funny gift design for scientists, teachers and school students engrossed in the study of amphibians. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)