I wonder how much tipping is influenced from childhood? For instance, the kids and I went out for lunch today with my folks. My dad's tip on our bill (which I saw because I was on the end and was going to pick it up before I was put down) was...generous ($65 on a $47 tab, he may have been making up for a special request I made for the kids which was 2 cups with lids and then 1 sprite and 1 glass of water, plus a side of cherries - those kids don't handle too much sugar and I have to ration the cherries). My mom is kinda a straight 20% unless its her hair person who she way over tips because she loves her and the woman gets her in or if its delivery in a terrible thunderstorm (common here). It made me think of this thread and I wondered if anyone else had been influenced this way? To me, you just tip in a certain way, it's just what you do, not something to be considered, just done.
Speaking of that special request, because we do it everywhere, DH and I both tip a little extra because it's extra work. Do most of you guys consider such or just tip a percentage and done?