Post nasal drip, frequent swallows, and a runny nose are common symptoms of someone that snorted cocaine. Being confident, talkative, skinny, having a strip club dancer for an ex-girlfriend, doing stupid things with their life, and wanting to move to a cocaine producing country are other small clues. One clue isn't enough but there's a pattern here.
They are also common symptoms of allergic rhinitis. If you don't know what that is, look it up and maybe you won't be as ignorant as you are now.