If they ask nicely like in a curious or unsure way and say "Are u deaf?" like they could tell by my voice or mannerism but wanted to make sure, I dont get offended.
What I get seriously 
is when they say "What are u, deaf?" like being deaf is such a bad thing and something I am at fault for. I do NOT tolerate that and I tell them to FUCK OFF..I dont care who is around me.
