Cup Check By: Nopher Post Feedback | Printer Friendly Format [TESTICLES] Locker Room Prank Newest Files In the boys locker rooms at many schools the boys do something called a cup check. Boys that play sports such as baseball, football and other organized sports wear a jock strap containing a hard cup which is wornto protect the testicles from injury. In many locker rooms the boys do this game called cup checking where they check a boy for a jockstrap with a cup by hitting another boy in the gro...