Personalized Plumbing Rocks Women's Plus Size 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. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)