"Fungus, I need something that will kill fungus. That will change me back," you think, as you remember that bad case of athlete's foot you had a few months ago. Your gym locker if full of powders, sprays and creams to kill fungus. You look at your new grey yellow body and shudder. Black spores splatter on the mirror, floor, wall and ceiling of the bathroom. You run as fast as your legs can carry you. You don't want to be seen, so you dart through the bushes parallel to the path. Fortunately, your gym is not far.
The sunlight feels weird as it hits your new body. You cannot possibly be changing this quickly, it must be growing only on your skin, if you can just kill it, you know you will be fine. You look both ways before exiting the park and dash across and down the alley leading to the gym. You think you are unseen until an old homeless man jumps out of a box in the alley and shrieks at you.
"Unholy demon, you'll not have me!" he raises a crutch and brings it down hard on you. It goes right through your shoulder and halfway down your torso. A cloud of fine black spores fill the alley. The man collapses in a coughing fit. You pull the crutch out of your body. It's practically rotted away, and your body is completely healed. It doesn't even hurt. You toss the rotting crutch away, and leave your attacker gasping on the pavement, and resume your run to the gym.
You cannot go around to the main entrance. How will you get in? The backdoor opens, and one of the employees carries out a couple plastic trash bags to throw in the dumpster.. You dart out of the shadows, and climb over the fence on the ramp to whee the door is propped open. Damn, it's not propped open. It's one of the really buff personal trainers holding the door. You brush against him as you enter. He grabs you and you struggle briefly. More spores cloud the air, and he coughs madly. His eyes water, and pushes the exit door open for fresh air.. You dash for the locker room and your locker.