I've gotten real sick one time - even without having an empty stomach. Didn't know what was going on, just kept puffing. Finally got so sick I could only sit there in a sweat, hugely nauseated, trying not to hurl. But an empty stomach can sure get you there more easily. It was no buzz... it was near puke nausea. If I get anything feeling heading that direction, I set the pipe down. It kind of makes you want to smoke more when it starts coming on, but that is the worst thing you can do, instead go eat a little something. However, if it's a nice buzz for you... then wow, nice thing for you!