Don't know right where this belongs...I'll just post it and feel free to move it if needed...yesterday about 5 p.m. I was sittin' right here on the compooter and heard a gunshot nearby-sounded like a shotgun...so I grabbed my umbrella...had everything else on me already...and headed out the door...met another neighbor (with empty pockets) out lookin' too...couldn't find anything and he said it was probably those ..(name).. kids over there...a couple of trucks sitting outside...I told him since he knew them go ask if everything's alright...he did and the boys (late teens) and Dad came out sheepishly...no gunshot...they'd been playing in the backyard and doing a "science project" one day after school let out...let me 'splain it to you all ...I can see where it might be beneficial for us to know it in times to come...they'd taken a plastic 20 oz. soft drink bottle...put a little warm water in it...added a few chunks of dry ice, and put the lid on tight...then chunked it out in the back yard and waited...they said it took about a minute...and sounded like a 12 going off.....they've also done it with a 2-liter and gotten a proportionately louder report....but not here...they said you must be 18 to buy the dry ice at the Kroger grocery...lied about their age...but that seems something that might be good to know and have in times to come...sure would have a diversionary and extremely distracting effect...and, as far as I know...totally legal to have and use (might violate noise ordinances)...might be nice to have in our bag of tricks....and what's not needed would make good icecream...sounds like a win/win situation...am I the only one who's never heard of this?