What surprised her was the occasional glances she got from her sister, Denise.Then came Friday evening. Chris was staying over at a friend's until som...time Saturday night. She and Denise had the house to themselves.After an early bath, Sue walked out clad only in panties. Denise went in to take her bath and returned later in t-shirt and panties. They had always been casual about dress among themselves.They sat and chatted for awhile about things in general until the subject turned to boys.She. ”She looked intrigued by the offer, “I don’t think different carts will help, but sure.”We moved our old carts out of the way and selected two new ones, pushing them into position.“What’re the stakes?” She asked.“Loser has to buy the winner whatever they want from the snack bar,” I said.“Nah,” she said, “we can do better.”“Like what?” I asked before jokingly adding, “Loser has to flash the winner?”She gave me that troublemaker look again and said, “Now we’re talking.”I had not time to respond. "Got a big job for you, special mission, into unknown territory."I wasn't sure about this, all sorts of ideas ran through my head."Dangerous mission too mind, don't know what you'll find." Colonel, please tell me what it is." I asked kneeling in front of him."That pansy of a Grandson, Steven. Got him in the next room. Terrified of me he is. Think he's not interested in women, know what I mean." His face got very serious. "Think he'd prefer the Navy to the Army, if you get my drift. Well your. My tongue started flicking back and forth across her clit, then down into her warm sweet love box. It was dripping by now and aching for more. My tongue continued to find its way between her clit and her love canal. Before long she was bucking and pushing my head down hard between her legs. All this took about 45 minutes before she was begging me to thrust my rod of joy into her. She began pulling me upwards and asking me “Please come up here and fuck me”. I was still licking at her.