A special kind of grower.

(Conceptual credit goes to Jakelyon from his story "Three Girls and a Swelling Cock." Love it.)

Your cock isn't anything special for now. A meager but serviceable 5 inches.

Yet, cum once and you won't go soft. No, your orgasm somehow carries more blood to your cock. And it grows. Enjoy a few orgasms and your typical becomes phenomenal. Each and every time you cum, you grow. Sometimes a bit, sometimes inches. And to your knowledge, there's no limit. And if there is, you'll be damned if you won't try to find it as soon as you get the chance.