You're too weak.

No man could resist the sight before you right now. Your cock is harder than it's ever been, and already you're dripping pre-cum out the tip, staining your boxer shorts. Rebecca bounces on the mattress as you get up onto your knees, continuing to lay in her deep sleep. Gemma turns around to look at you, as you free your cock from your shorts and line it up with her oil-drooling asshole. Her eyes burn with devilish lust as she grins at you, causing you to feel both guilt and arousal all at once. You lean forward and grab a fistful of hair at the back of her skull, turning her smugly victorious face away from you and yank her head back hard. Your other hand grabs her by the hips as you forcefully slam your cock into her ass in one motion. You've never felt anything like it before - something so incredibly tight, yet completely resistance-free - as the entirety of your cock slides inside of her until your hips smack up hard against her ass cheeks.

"Oh FUCK YES!" she screams as you fill her insides. "FUUUUCK YEEEEESS!!"

You look down at Rebecca, unroused by Gemma's delirious screams. You pull back your hips, sliding out of her ass, before slamming back forwards again, almost pushing Gemma off the bed. Her sphincter clenching hard onto your fat cock, squeezing out oil from the gaps and down the insides of her thighs. You feel the sheets become an utter mess under her dripping legs as you start to rail her in the ass, your sleeping wife just bouncing up and down with the rhythm of your thrusts. With the obscene amount of oil inside Gemma's ass, your thick cock slides in effortlessly, and she groans each time you pull yourself out of her at the chasm of emptiness you've left behind.