Got to be up there. Giving a 9 y/o girl an Uzi and she then accidently shoots you with it. AND you're a firearms instructor to boot !
9 year old girl shoots instructor dead with an Uzi.
Pitty the poor girl who will grown up thinking it's her fault even tho the numpty (and her stupid parents) should never have put her in the position. What if she'd shot herself ?