This is my old army helmet.
To survive the brutal army training all the people at home used to say "Vasbyt!", which translated from Afrikaans is literally "Bite Tight"
The set of teeth are my own taken by my dentist a few years ago, after it was discovered that my excruciating headaches and shortening of my teeth was a result of grinding my teeth too tight in my sleep at night. Vasbyt.