Of course, we're both on the pill.

I grimaced, trying to hold back the impending flood, and whispered in her ear, "I'm about to come."

She grinned, then nodded. "Do it. I want you to flood me..." She convulsed again, gripping my cock ever tighter, then I felt the spasms begin. I watched the outline of my cock along her belly twitch and drove it even deeper, trying to **** it all the way to her rib cage. Suddenly, my balls clenched up and gobs of hot, thick semen shot up my cock and were painting Lana's insides. She was rolling her vaginal muscles along my cock, pumping more and more semen out of me. A handful of spurts caused her belly to distend slightly, then, as I pumped more cum into her tight snatch, I felt my cum begin to seep down around my shaft and was eventually pumping my own cum back onto me, out of her cunt. I again watched the outline of my cock, but this time it was fading as she became more and more bloated from my immense load.

After a minute or so, my cock began to soften, and as it did, a torrent of white sticky cum came pouring from Mara's abused cunt, forcing my softened cock from it's warm resting space. It escaped with an audible pop, followed by a veritable flood of cum, most of which spilled down into the toilet beneath us. Mara collapsed on me, panting heavily, glistening with sweat. I sat up, and began to push her off me, then thought about what I should do next.