Dude.. bong hits are the safest way to smoke weed. The water filters out a shit ton of tar and resin, plus it cools the smoke so it doesnt burn as it goes down. I love the bong, and thats like the only way i smoke, and i always take giant hits.. I love em and i love to hold it in. Although if you take big enough hits and choke on it (swallow the smoke) your in trouble and will prbly start coughing a shit ton, and then either puke, or burp out smoke. I've actually burped out smoke while i was in school once.. I laughed my ass off.