We once went camping at Windy Harbour near Blackpool and both my parents are deaf, my father a little worse from a few beers in the club made several trips to the toilets during the night on one trip he fell over every guy rope on the way everyone was shouting whats going on and cursing him but he could'nt hear them and just went from one guy rope to another we were all terrified of going out to tell him... the next time he went I went with him lol.