Potion that Makes You Cum Super Hard

You take one of the experimental potions, instantly feeling a building pressure in your cock. Before you can react you begin to cum uncontrollably. The amount is far beyond any you could have imagined, and the orgasm is so intense you fall to your knees, bashing your swelling balls on the floor in the process. As you lay in a pool of your own thick milk, Arcadia remarks that she might need to dilute the mixture a bit.