I've only swallowed one in the 2 years ive had mine. lol i tried eatin a pizza like an hour after i got mine and that was a retarted and painful choice lol. talkin was fun too lol and my dad dint notice til i told him. use mouthwash after all meals. oh and be careful ur bound to bite it I chipped a small part of tooth on mine-did not feel very nice . also keep an extra ball handy whenever ur out; its not fun tryna hold the bar up if the other comes off and is swallowed or lost(at least till ur used to it and know it wont come off. cool stuff!