I decided to make this thread because most of the bullshit used to identify someone who is high is based on lies meant to scare said person into confessing. (ie. Just yesterday I heard a cop who said, "Marijuana makes a thick green film on the smoker's tongue".) So... with that being cleared up, what are the actually physical signs that someone is high? And what are some ways to cover them up if the occasion calls? Kudos to anyone who mentions something other than "red eyes". Thanks!