"Potion of greater manhood"

After reading the menu over, you see something that hits close to home. Your 4 inch cock has always been a roadblock in your love life, and has earned you ridicule from other men who have found out about it.

"Tell me more about the potion of greater manhood." You say, finally having hope to fix a problem that has eaten at your mind for years. "It's simple lad, you just take a swig and your penis will grow, the whole bottle is too much of a dose for one human, especially of your body weight" he states, noticing your lithe frame and lower than average height. "I would say drink no more than a fourth of this, but don't worry, that would still be plenty big."

"I have to have this potion sir, what do you want for it?"