I was stopped and asked for a tip in a Canadian bar when I went to take the drinks back to our table. A dollar per beer to take the cap off. But North American

I was stopped and asked for a tip in a Canadian bar when I went to take the drinks back to our table. A dollar per beer to take the cap off. But North American's do seem to enjoy paying more than advertised. First a bunch of taxes, then some tips, I don't get it.