10 years ago when I was young I secretly dropped a whopper down my parents couch just to see what would happen.Now ten years have past and I was cleaning underneath the couches,(totally forgotten about the whopper).Then I found it,the inside was hollow and it still had the waxy chocolate on it with a layer of dust.(wanting to leave it under there for another 3 years but, that didn't happen.)
So, what are you're science experiments that have gone horribly wrong?