I would inject both of them with a special solution. Would have to this about once every month but it will make a big difference. Now lets see what we...can do with your tits." He then began to massage her tits and feel the nipples. He pinched and pulled her nipples to see how he could stretch them. He rubbed her tits hard and pushed and pulled them as he watched his hands. "I thing we should go to DDD and also add bigger nipples. You do not want tiny nipples on a full set of big tits. I can do. My cock exploded, releasing my hot cum from my balls, shooting it into Amanda's mouth as she suck my cock. As I was finishing cumming she Gaged from my cum, releasing my cock from her mouth I watched as she spilt some of the cum onto me and my bed. She swallowed the rest before apologizing for spilling which I said not to worry as I was ecstatic that she sucked my cock. She went quickly to rince her mouth in the bathroom before returning to my room and joining me on the bed. We laid and chatted. Shlap, shlap, shlap, shlap... he shoved himself inside her again and again like she was just an object to fuck. His sneer of satisfaction rutting her flesh was seered into my mind, the entire image, her flopping tits, yuh, yuh, yuh, shlap, shlap, shlap. I took the drinks out to them. He didn't care that I was there and she didn't even notice. He might actually have fucked her just that little bit rougher after I came back out and just stood there watching him borrow my wife. "Guess we didnt. I stop Jackson though, the last of my brotherly instincts put to use. My hand is on his wrist and he freezes for a moment. Then, he reaches behind him and takes out his wallet. His voice is doped up from all the wine and weed but he says without looking away from her. 

“I’ll give you everything in this wallet now to fuck your sister Kev.”
There’s almost two hundred dollars in there. My throat is dry, my cock hard, and my brain is fuzzy. I take my hand off his wrist and take the wallet..