Re the puking - provided they regurgitate it immediately after swallowing it wouldn't contain any gastric juices, and would just about be palatable to the other girl, but all three times most of it misses the other girl's mouth and goes down her front anyway. Remember they could have many attempts at this before editing.
Other scams are the guy jizzing half a gallon onto a girls face (done with a tube held under his dick, to produce yoghurt or similar) and the guy still alive after being cut in half by a train. He is so obviously positioned between the sleepers where the ballast has been removed to accomodate his legs. If it had been true the push bars in front of the wheels would have rolled him and made it very messy.