Not quite the same, but something just about as foolish happened locally at an Ikea outlet.
Idiot wearing loose pants with a pistol in his pocket (irresponsible) sat in a couch type thing and his gun fell out without him knowing it (more irresponsible).
A six year old happened to find it and discharge a round. No one was hit, but that guy is charged with felony (neglect - can not remember the exact charge) so this moron will loose his right to even OWN a weapon of any kind.