usflag.org

K7JG TIL The flag should never be used as wearing apparel, bedding, or drapery. Also, the flag should never be used for advertising purposes in any manner whatsoever.
6jEY TIL That an American flag hung upside down signals that one is in distress and needs help
eY54 TIL that the US Flag Code states when a flag is no longer in appropriate condition it “should be destroyed in a dignified way, preferably by burning.”