The Horror in the Gym's Toilet

What lurks in the gym's toilet? What's lurking there to pounce on you? What's in the atmosphere of the gym's toilet? What is haunting the gym's toilet so much that the general public hardly enters there, and what drove away many, except for the most desperate who had to use the gym's toilet? What nightmares lurks within that would drove you out of it in a hurry? What kind of people would tolerate this nightmare that lurks in the gym's toilet? Who can stomach such sickness?