Futa Cock Growing Serum Makes You Shrink

You're a big size king when it comes to how you like your cocks, and while you're futa girlfriend's cock would be large enough for most, you truly crave monster cocks. She strokes to try and make herself even bigger, but it's still not enough to satisfy you. However, you've purchased a potion from the black market that is supposed to provide a temporary growing effect for futa cocks. She slurps it, looking to finally please you, and surely enough her cock more than triples in girth and length. Eagerly she fucks your ass, feeling you stretch to accommodate her new size and your hole feels so good gripping her. She cums inside you, but after you're filled with her cum you begin to feel really strange. She gives you a moment to recover but you begin rapidly shrinking and in the blink of an eye you're the size of an ant. Seems there is an unknown side effect to the potion that you did not know about! Tempted by the power she has over you, your girlfriend (whose cock still remains huge) wants to punish you for how much you're made her feel she has an inferior sized cock. She finds her cock hungering for you inside of it, and she inserts you inside her shaft. You're slowly devoured by her cock, pushed down the length of her shaft by tight walls soaked in precum, until you reach her balls. Inside, she ensures she only digests you *just a little bit* as she still wants to be able to cum out of her. You look up from her balls, desperately trying to climb out, seeing the shadow of her hand rocking back and forth as she strokes her futa cock until cum bubbles at your feet and you and launched out of her cock.