Your mother is coming to stay at your apartment. It's last minute, and in her haste, she must have forgotten to pack her pajamas. But no worries, you tell her, your girlfriend isn't home tonight, so she can find something to wear in her dresser. Your mother smiles and goes off to find something, returning with a handful of lacy garments. You expected some old t-shirts and sweats, but then your girlfriend is a bit of a girly-girl. You should have expected this. What you didn't expect, however, is for your mother to model each outfit for you. Turning around, but only barely, to try out lacy number after silky teddy, her big, full breasts stretching the fabric much more than your girlfriend ever could. You love big breasts, and you'd be lying to yourself if you said your mother's breasts weren't some of your favorites. You could never tell her that...but then, that glint in her eye, that smile...tells you that maybe she already knows. She smirks, pulling the last teddy off, not bothering to cover herself anymore. Her eyes fall to your crotch, where you cock is unhidably hard in your jeans. There's no use pretending, you realize, as your mother starts to get closer, starts to talk about her breasts, about how much you stare. About how you should touch them. Squeeze them. And you know you shouldn't, but she's literally begging for it, and before you realize what you're doing, your hand is on your mother's tits, palming her breasts and tugging her nipples, and she pawing at your crotch, and then you're taking it out, and she's reclining back, spreading her legs, purring at you, pulling you closer, tugging your cock against her pussy and oh my god, it's so wet and hot and then, Jesus, you're inside her, pushing, thrusting, her big, soft tits bouncing as you fuck her, your own mother, begging for your cock, you cum, pulling you closer and cumming, cumming, the both of you...