That people park their sensitive parts over residues of every day (toilet bowl cleaner). The chemicals react to produce the gas that makes the pressure that makes the bang. By virtue of that reaction, they should be rendered less caustic. They could have done the same thing with mentos and pepsi if they had been just a smidgin more creative. It's a firecracker without fire.
Now, maybe our ideas of fun differed when we were kids, but the stuff we made loud noises with was far more dangerous (ignition potential, sometimes shrapnel), even if we didn't throw them in anyone's general direction.
Well, you had some sense then. You didn’t toss it right at people, and you also flushed the toilet of your toilet cleaner before sitting... and certainly it was diluted with water at that point... you are stretching for what sounds like an excuse frankly.
And the reason I point this out is not to pound anybody down but to say GET SOME SENSE AND STOP IT....