Here are things I've learned NOT to do while wearing my helmet...
- Sneeze, especially if my allergies are really acting up... green snot is not fun to wear all over your face and helmet... I try to open the visor if I feel a sneeze coming on but can't always do so.
- Burp... if you do it with the visor closed, the smell gets trapped and depending on what you ate, it can make you light headed
- Blow bubbles with gum... gum is not very easily to get out of the padding of the helmet
Sometimes your knight in shining armor is just a retard wrapped in tin foil.