I'm beginning to think that there is a hidden tube taped under the penis that runs down the leg going off stage and there's a stage hand watching the director. At the signal he will press down on the pump attached to the 55 gallon drum of artificial semen. The company that sells the fake cum comes in different viscosity and color like clear, milky, gooey etc . They are experimenting with flavor. The logic being better tasting makes for more appetite.