If you like getting scratched on your back do you lean in to it?
It's no different really. If it feels good, then lean into it hoping you get more. This includes cat/dog chin scratches and side of the face rubs. If a cat is getting back rubs while laying on its side, it will push out the hind feet hoping to catch on to something so that it has leverage to push into the hands.
Sheeba - born 11/14/07 at 12:30 pm