When I lived in Missouri, a guy that I knew from college swung by to visit on his way south from Gawd, It's Freezing to Gawd, It's Humid. He had had something medical and had lost most of the fingers on one hand.
So, he arrived and I went out to help him bring in his bags. Of course, I said: "Hi, Al, can I give you a hand?" He just looked at me and said "sure". It wasn't until later that I realized what I'd said. I figured that he had to have known I wasn't being insulting.
But since he drank up all of my bourbon that night (about six shots' worth), he got even. On the other hand (there I go again), it was basically one shelf above Ten-High.