There have been a few times on those long long excessive nights with the close buddies where I've smoked so much I kept feeling like if I didn't lay in exactly the same position and keep my eyes either closed or focused on one thing I'd puke... lol I have been close to puking lots of times like this but never actually have. Although the first time I ever smoked I woke up in the middle of the night and like my mouth was gushing saliva and it was kinda like vomiting lol I've known one other person that had the saliva thing...