Sexy Fun Times/Laid/Mall/Mom/Boy/Fuck
You know from experience that assholes can stretch; even quite young children can take an adult cock with a bit of training, but this kid isn't even a toddler yet. You look at his mother for reassurance.
"It'll be okay; just take it slow," she says, her voice thick with lust. "He's used to his father, but yours is a bit bigger." She takes the oil and drizzles some over your cock.
You take a deep breath and start pushing. At first, the baby slides away, so you hold his ankles and pull him back. You glance up from where the head of your cock is squashed against his ass and see that his mouth is open in a round 'O' of surprise. You keep pushing.
"Go on, fuck the little cunt," his mother says, keeping a firm grip on your shaft to ensure it's lined up properly. You wonder what his life at home is like. "Keep pushing; it's opening now," she says.
It's true, the boy's ass is slowly stretching, but there's a long way to go before the head of your engorged cock will actually go in. You stop and hold still; The skin around the boy's ass is white as it stretches and you begin to worry about injuring him. On the other hand, you are more turned on than you can remember.
The mother reaches round with her spare hand, puts it on your ass and pushes you forward. Astonishingly, the baby's ass stretches even more until the head of your cock is almost in. You are still holding his ankles and spread them as far apart as they will go; the mother stops pushing and drizzles some more oil on the baby and on your cock. "I told you he could take it," she says, as the head pops right inside and you feel his sphincter snap tight below the ridge.