Even better: When he's plowing your ass and then his water breaks
God, he pauses for a second and I figured he just needed to give his gravid body a break - I could feel how heavy his belly felt resting on my back, my children heavily active inside him; fucking me as hard as he was, as far along as he was, hasn't been easy on him lately, but he was determined not to let my hole go unfucked. He'd been especially rough today, almost like he was angry about something, and I loved every minute of it.
But he gives a small grunt, then a yell, and suddenly I panic.
"I think my water just broke," he says in a ragged, panting voice, but he half giggles as he says it, and when I turn to look at him he's looking back at me with a devilish grin. He flips me down onto my back, his pregnant belly looming over me, and brings my hand to it to feel.
"How long have you been in labor?"
"Ha! I've been having contractions on and off all week. Just wrote it off. You know I have a high pain to-"
He grunts again and I feel his belly tense beneath my fingers. I start to get up, but he immediately shoves me back down.
"Oh I'm not done with you yet. In fact," he unbuckles his strap and throws it at my face, "Go fetch me the big one." I gape at him, and he pushes his belly seductively against me. "Gonna stretch you out while your baby stretches me out. Sounds fair doesn't it?"
I begin to protest, but he interrupts me with another loud scream. He then glares at me with wild eyes.
"I didn't ask. Go get it."
I do as I'm told, weirdly turned on by the whole thing; when I come back he's doubled over panting, rubbing his belly, but the minute he looks at me it's that look that lets me know he's not going to stopped by something as insignificant as giving birth.
"Fuck, you really did fill me good, didn't you? Gonna return the favor. Now get your cute ass over here."
He plows at me mercilessly right up until he's finally crowning.