American Flag
How to fly it. (mental_floss Blog) Answering all your flag display questions, like
Is it true you have to retire and burn a flag that touches the ground?
No, that’s a myth. The flag code is quite a bit more realistic about this situation. While the code states, “The flag should never touch anything beneath it, such as the ground, the floor, water, or merchandise,” there’s no rule saying that a flag that slips has to immediately be burned.
Canadian Flag
Has flying rules, too, although they don’t seem to cover as many specific details as the American Flag Code.