Shoot it on her stomach

"Oh fuck David, not inside me! Pull out and shoot it all over my stomach! I want to feel your hot spunk covering my body!" Alyssa pleads body still trembling in orgasm.

Not about to argue that, you begin doubling your efforts, continuing your **** on her helpless body while the intense pressure steadily builds inside your balls. Finally, as you feel the cum boiling up from your loins, you pull out from her, roll her onto her back, and begin jacking your cock. Alyssa spreads her legs wide and squeezes her tits together, then looking at you with a smile and that glazed look one gets just after cumming, starts to egg you on. "Oh yeah, jerk that cock off! Give me that fuckin load! Make those nuts burst all over my belly! I want it! I want you to cover me with that big, salty load!" she tells you, obviously turned on by the idea.

If you weren't so close already, that dirty talk would have definitely pushed you over the edge and in the next second, the first of your blasts erupts from your bulbous cockhead and lands just below her ribcage, making Alyssa cry out in glee. The release is incredible and you can't help but let out another, loud, groan as your legs buckle beneath you from the sensation, but you manage to stay on your feet and continue tugging on your member. Thick streamers of white cream shoot from your cock, landing a little closer to you each time, eventually creating a trail of cum that runs all the way down to her pussy. As the final waves of your orgasm pass, you squeeze the last drop of your cum to the tip then wipe your dick clean on her fat pussy lips then look down to admire your masterpiece. Alyssa is visibly worn out, head pressed back against the cushions and breathing heavily, but with a very satisfied smile on her face.

Worn out yourself, you sit down in a nearby chair and work to catch your breath then see Alyssa lift her head.

"That was exactly what I needed for my birthday David. I can't remember the last time I came that hard. Thank you." She then starts to sit up, moving to get up from the couch. "I hope you don't mind if I go clean myself cleaned up, but you should stick around and keep my little sister company. It looks like she could use some attention if you've got anything left in you." Then turning to her sister says, "He's all yours Danielle. You've really got to feel that dick inside you!" she says climbing to her feet then making her way to the bathroom.

You watch Alyssa's ass jiggle and shake as she walks away until she disappears around the corner then turn and smile at Danielle. "I promised you I'd be able to go again after I finished with her." you say, slowly stroking your cock to try and keep it engorged. "Well, what do you say? Do you think you want to take me up on that offer?"