Teachers catch their colleague urinating in their thermos flasks

Four female colleagues who were suspicious about their strange-smelling tea set up a hidden camera to catch the teacher in Lianyungang city.
It revealed him undoing his flies and urinating into the pink thermos flask when he thought no one was looking. Police arrested Gao Chao, 54, and tested him for diseases at the local hospital, but said they cannot charge him with a crime because he caused no tangible harm.

Source-Dailym