A photo posted by Elena Delle Donne (@de11edonne) on Aug 6, 2016 at 8:54am PDT Subscribe | UPI Odd Newsletter Subscribe RIO DE JANEIRO, Aug. 8 (UPI) -- A U.S. Olympian competing in Rio de Janeiro shared a photo of an unusual bathroom sign banning throwing toilet paper into toilets -- and using commodes as fishing holes. Basketball star Elena Delle Donne posted a photo to Instagram showing the instructions posted outside of an Olympic Village bathroom. Advertisement The sign appears to ban bathroom users from throwing trash in toilets, vomiting in toilets, standing on top of toilets to squat over the bowl, using a fishing rod to try to catch sea life in the toilets, and standing sideways at a urinal -- presumably to defecate. "Guess I won't be toilet fishing today," Delle Donne posted. The sign is similar to a posting at the 2014 Olympics in Sochi, Russia, which warned toilet users against similar activities. The Sochi sign also included standing on toilets and fishing in toilets, but also included apparent drunk reveling on the floor of the bathroom and urinating in such a way as to cause excess splashing. Read More Sign bans fishing in Sochi Olympics toilets Olympic bathroom stall with two toilets raises eyebrows Man tries to put out Olympic flame with fire extinguisher in Rio