I am very familiar with this act of doing the same thing over and over, just because she said she liked it. It's very closely related to the "Law of Diminishing Returns." I remember an Econ 101 class at KU where the professor showed a slide of a Coke advertisement from a magazine. The picture was a full bottle of Coke, in front of four empty bottles. The caption read, "This one will taste just as great as the others." (Or something like that). He pointed out that, in most experiences, this is just not true. By the time you are drinking your fourth Coke, you're bloated, you're not particularly thirsty, your teeth are beginning to get that sugary/disgusting coating, and, no, it just doesn't SEEM to taste as good as the first one.

I know that W's moans of pleasure when I am rubbing her shoulders will change to growls if I keep rubbing in the same area in the same way too long.

Hairdog