I haven't broken a bong, but this asshole I used to hang with broke 3 different pipes of mine, and on the last time just refused to buy me a pipe and bought himself a cheap one. Made sure I was there too, made sure I got there via his car too, so I couldn't even tell him off for being a faggoty syphilitic pus oozing shitfucker. I've broken about 3 bowls, all from cleaning. and one downstem, from cleaning as well.