Personalized Plumbing Rocks Youth Long Sleeve T-Shirt. Plumbing rocks text with three dancing rocks holding plungers and a pipe wrench is a humorous gift design to tickle the funny bone of plumbers and vo-tech students at back to school, birthdays, holidays and graduation. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)