You've volunteered to try out a new cock cream that guaranteed to make your dick bigger and girthier than ever. You don't expect much, but you're shocked when the scientist rubs your hard cock with the experimental cream and your dick becomes huge! She can't believe it either, and seems to be almost mesmerized by the sight of your thick shaft and bulging head. Before either of you know it her mouth is around your cock and she's begging you to put your cock inside her, which you happily do, leaving a huge load in her tight little pussy.