This is a true fantasy that me and my girlfriends mom talked about doing. (it has not happened yet) I will not use real names.
Her: Gonna talk you through what I want you to do to me in the shower. The bathroom is dark, but there is a candle flickering and the water is on, warm and ready. I take off my silk robe and walk in first. You strip down and come in next. Doors closed and your back has the water coming down it. I look into your eyes right before I turn around. You know what's coming and grab both my wrists lifting them up over my head and placing those palms down high on the shower wall. With both your hands you slide down the insides of my arms down along my ribs, over my hips and down onto the outsides of my upper thighs. Now with your left hand you slide it palm flat back up my thigh then around to the back of my thigh then down my ass and leave the left hand there holding on to my ass. With your right hand you move it up and over my hip to the front. Spreading out your fingers you slide across my stomach and your fingers brush low under my belly button. Your left hand moves forward now holding onto just below my waist in the front, that spot to the left of my belly button. Next your right hand slides down now between my thighs to guide my right leg open more. At this point I moan. You feel and see my ass move up as I arch my back. I lean forward more, gripping the slippery shower wall and go up on my toes. At this point you know it's time.. You have to slightly squat to get access as you hold on now both hands gripping my waist. I help out by reaching down between my legs from the front and guide you inside. You're inside now.