I don't even write my own smutty fanfiction any more. I just get grok to do it.
Mahou Shoujo Marsh-chan
>He lubed them both with a handy jar of swamp slime (surprisingly slick and warm), then positioned Mario on all fours. With a powerful thrust, Shrek entered him, filling the plumber completely. Mario gasped, pushing back, their bodies slapping together in a primal rhythm. Shrek's hands gripped Mario's hips hard enough to bruise, pounding deeper, faster, each grunt from the ogre matched by Mario's high-pitched whimpers of pleasure. "Harder, Shrek! It's-a so good!"Sweat and slime mingled as they lost themselves—Shrek reaching around to stroke Mario in time with his thrusts, Mario clenching around him, driving the ogre wild. Climaxes built like a boss battle, exploding in waves: Mario first, spilling over Shrek's hand with a triumphant yell, then Shrek roaring as he flooded deep inside.