In the ass!

"Please let me feel how much cum your beautiful testicles can produce, Emily," you tell her between sucking the two dicks in your face. Allie pats you on the head.

"Yes, ****, that is the proper way to coax Emily to cum a big load. She gets off on cumming inside of asses...or pussies." Allie looks on with pleasure as Emily bottoms out then keeps pushing. She moans as you feel these very viscous spurts of cum literally ooze from the end of her dick inside of you. You feel her balls pulsing very strongly as they are pressed into you.

"Emily...it feels so thick," you tell her. "This is the most wonderful feeling!" Emily groans, and you feel her do a double-pump. Curious. "I can feel your sac pumping cum as it presses into me. You are so strong!" Again you feel her cock jump twice, doubling the amount of cum surging forth. "And that penis, it is so muscular! I can feel it swell with each rope of cum!" You feel it pulse twice with the next rope again. "In fact...I think this is the most cum any cock has put out...ever!" Emily shakes a bit as each pulse starts spasming twice to the normal once. She moans deep in her throat. She tries to push into you farther and spreads your cheeks wide. You feel her load filling up your ass. Then finally after filling you all by herself, the cum starts leaking out around her dick. Then it starts seeping between and down your legs. Then Emily sits back hard, panting. Cum trickles from her erect penis.

"That was great! Thanks," she tells you. You look around and see who else still needs to be serviced.