"Don't feel ashamed of those feelings you have for your granny. She is a woman after all and has similar feelings towards her grandson. The time will come where she won't be able to keep her little secret anymore and take the 'ball by the horns'. Don't be shy, you want it. Let her undress you, kiss you and bring your cock to erection with her hand. Once you're on the bed, it's likely that she'll want to mount you and control the pace. It's likely that she hasn't had a cock for some time but whilst she might be a little dry at first, once the head of your cock has entered her cunt, she'll be flowing like a tap. This is where you take each breast in turn and suck on her, bringing back memories for her and bringing her to orgasm."