Ah, the emergency tracheotomy! I never could remember whether to dig in above or below the Adam's Apple. If you hit the thyroid it gets a bit bloody, but anything is worth trying if the patient is choking to death. I believe that the classic DIY method involves the use of a Biro tube to keep the air flowing in and out of the hole.No, no - I distinctly remember that my copy of Scouting for Boys said that if I came across a doubled-up, blue-faced cyclist, I should make a hole in his throat with my trusty pen-knife and all would be well.