I played rugby with a deaf guy in Edinburgh (a few years ago) He was partially deaf 75% but refused to learn sign, relying instead on a combination of lip reading and the sounds that he could hear.
The amount of times we would scream "watch out" or "man on" to no avail, as another kamakazi tackle would hit him from behind, makes me flinch just to think about it.
His name was Graham Watt (well, thats what we thought!) turns out that his name was Graham Buchan but said "What" so much it became his monicker - and he couldn't be bothered to tell anyone so it stuck.