I went out for dinner with my girlfriend the other day. The bill was about $25. Waitress was quick with food and service, but she forgot to give me water when I asked for it. I did not get water until I was almost done with my meal.
For that, I left a $1 tip. I wasn't happy about being forgotten--especially with water thing. My girlfriend gave me a big lecture about leaving poor tip and that being late with water is not a good reason to leave a poor tip.
She is trying very hard to learn about Deaf Culture so she asked me if it's something that Deaf people do---leave poor tips??? I told her I did not know. I cannot really speak for every one.
My girlfriend reminded me that waitress often has to wait 7 or 8 tables. She told me to remember to help waitresses because they get paid below minimum wages. Still, I had "bruised ego" from not getting water. Go figure.