I have breakfast at my local Denny's quite often. I know all of the staff quite well and have attended Bar-B-Ques and parties at various employee's houses.
There is one server who has a running joke of always asking me "Is everything alright?" then when I reply with the usual "Yes", I get, "Good. I don't want to get shot."
The few times I have had a complaint about something I get "Don't shoot me, it was the cook's fault."
The simple implication that I would ever use my firearm for any reason other than self defense makes me uncomfortable. As such, I keep telling myself to say something about it, but I never do. It's said in a humorous and friendly manner, but I still feel it is nothing to joke about.