She cums

Maybe you did it right because Sue moans, grabs your head and pushes it down, forcing her cock deep in your throat. You almost **** but suddenly you fell burning explosion in your crotch and at the same time your mouth became full of hot jizz. The only thing you can do is to swallow. She keeps cumming to your mouth and you swallow more and more.

Finally you break Sue's grapple and fall down on the bed aside her.

"Sis, what the fuck?"

"It's heavenly." - says she, "When we'll turn back I should say "yes!" for every chance to suck cock."

"Well, I'm glad that you liked it but I need more. I felt something down there but then you came and distracted me."

"You need more? Let's think what we can done?"