LOL I do wear my HA, and sometimes i hear repeatly of the sounds that i realize something that is behind me. Sometimes, if I sign in saying, " oh im sorry I didn't see you". I notice that they often get red face. 
Either they could have said nasty things to me until they realize that I m Deaf or they could been in a "deer in the highlights". lol
Its easier for me to say, ah, I am an ASL user. If i say, I don't speak they would think i couldnt communicate at all. WRONG! ASL is just a language and its a commuincation method. 
