I couldn’t tell you how many times I’ve thought of the scene in Snakes on a Plane where a snake comes out of the toilet and bites some poor chap’s junk. Honestly every time I go to the bathroom on a plane I think about it. This probably won’t help.
Yesterday during an Aeromexico flight from Torreon to Mexico City a snake emerged from behind the overhead luggage bin and caused absolute chaos. Passengers sitting below the snake evacuated in horror just before the snake fell from the roof. Passengers used blankets to trap the snake while the pilot requested priority landing at Mexico City. All passengers disembarked the plane through the rear, apparently shaken by the events.
Just for good measure.