He came in and said he was gonna take a shower and thought he would relax with us. He comes in and flops down on the couch and starts chattering. I lo...ked at my wife and told her I could go for a drink and headed to the store to get some of course, and her brother had decided to take the ride and never shut up the entire way. We got to the store and I picked up some vodka, Jack Daniels and some Schnapps (her favorite) I saw a deck of cards at the checkout line and grabbed them as well. We got. " The assistant took me straight to the glass collection & started her sales pitch of what kind i would or my friend would prefer as she corrected herself & would it need to be life like with a toy attached for the user as well? I pointed to the nice 7 inch thick purple dildo with the 4 inch attachment that was colored black for the users pussy to enjoy. I almost laughed & shocked at the same time as the assistant asked if i wanted to try it on for size. I hesitated & stammered words out but. From this angle, I could see her pale rounder tummy exposed under her wide suspender belt that made her look even sexier.Then she stood up and started to lift her top up and her big cream bra came in to sight as I clicked on the phone. She pulled the bottom of her bra out and over her tits, and what tits she had 36 or 38 DD or E at the least. They hung down, all full and soft looking with lovely big hard nipples.This posing was having some affect on me, my cock strained inside my boxers while. "You don't have much of a choice after what I just saw." "Oh, well that's OK. I like being dominated and forced to do things anyway," she said and gave me a wink. Hearing these things from my own innocent looking little sister drove me crazy. I unzipped my pants and pulled out my 9" hard cock and she was in shock. She just stared at it until finally, she did the last thing I expected. She got down on her knees and engulfed my entire cock with her mouth, fitting in as much as she could. I just.