(I work at a movie rental store. Sometimes we have deaf customers. I know some conversational ASL and can usually communicate with the deaf community just fine. A woman and her daughter walk up with a note and place it on the counter and point to it repeatedly.)

Note: “We’re looking for two movies that came out last Tuesday.”

Me: *in ASL* “Hello, yes, what movies?”

Customer, to daughter: “Why does he think I’m deaf?”

Me: “Oh, I’m sorry! Usually our deaf customers write notes to us.”

Customer: “That’s ridiculous! How dare you just assume I’m disabled! It’s ridiculous!”

Me: “I’m terribly sorry. May I ask why you gave me a note instead of asking me verbally?”

Customer: “You’re Asian! How was I supposed to know you knew my language?!”