Sh-t hole uk inventions and discoveries - disc brakes,tin cans,cat eyes,depth charges,corkscrews,fax machine,phone,electric motor,gas mask,lightbulb,lawn mower,a mousetrap,penicillan,radar,television,umbrella,thermos flask .
usa - inventions and discoveries - tipping ,queue jumping ,talking loud over the top of everybody ,bad manners and abusing the english language .