Get in bed and fuck your mattress full

I get up and walk over to your desk. You pull out the drawer on the right and pull out a sharp pair of scissors. Trotting back over to your bed, you pull up your cum banket and stab into your mattress repeatedly. You toss the scissors aside and slop back in. You pull the blanket snug over you and poke at the mattress until you feel one of the hole you made. you had the spell memorised at this point, and slowly began pumping as you recited. Once complete, you powered through the sensation and managed to keep fucking the memory foam. You could feel your balls growing to be grapefruits, sat on the backs of your thighs. Your sac felt amazingly soft and slimy, filled with fat. Once the bliss waned, you were bale to fully commit to fucking your bed. Your cock made the hole nice and slimy, and the tight squeeze around it made for a good fuck. Your hips were swiftly getting tired, needing to move your huge and heavy balls with each pump. Your bed made slimy sounds, not unlike ground beef with every movement you made, and being this immersed, in the middle of it all lubed up your entire body with your own thick cum. It was all you could smell, and occasionally, all you could taste.
After a couple minutes of breaking a sweat rapidly pumping your red and swollen cock into your bed, you collapsed, feeling all of the pleasure that came with this new orgasm.

It was better than you hoped.

Your mind turned to mush, focusing entirely on the sensation nesting in your junk. It built and built, opening the gates to heaven in your member, and staying at that white hot level as you turned your mattress into a cum sponge. For two and a half minutes you laid limp, pumping your seed into your mattress.

Once it was over, your eyes opened. You peeled your cheek from its slimy resting place, and slowly slopped your cock from its tight slimy home. As you sat up on your knees, you could feel the bed squelching under you, and you could only imagine how it was oozing out the sides onto your floor. You pull your slimy body and enormous balls from your bed, shakily standing up in the center of your room. Despite the events of this morning, this spell was sneaky. It only made you hornier after every load. Needier for the next biggest orgasm. Kinkier for what your cum could do. You put your hands on your hips. What to do...