Where do guinea pigs like to rubbed?

guinea pigs like to get rubbed in various places, it really depends on your guinea pig's personality but most guinea pigs love getting rubbed behind their ears and on the back. I think that's what you are asking.

My guinea pigs love it when I rub them slowly behind their ears. They like to stretch and relax when I do it. They usually lay down when I do it and have this hazy face that has 'That Feels Good' written all over it. :P