You gather up laundry detergent and cleaning supply's into a cart. You put some motor oil in there. You get a gas can to mix the stuff up in. What you come up with is boiling and bubbling making a foul green smoke. You take a fan out of its box and direct the fumes directly Signal's way. He starts sweating and coughing. You watch with a happy grin. Soon he swoons onto the counter and the auto tracking belt rolls him to the ground. That's when anther cashier calls a manager over. They assume he got drunk before work and passed out. You have by now returned to fan to its box and pushed the chem cart to the corner. You learn later that Signal died on his way to the hospital via ambulance! Ha Ha! They think it was a drug overdose!