More dirty, more cock

Now that you were finally a decent size and bigger than Felicia, it was time for things to get a bit more perverted. After taking a small step back you looked down, noticing the bulge at the front of your jeans caused by all this astonishing growing. You were certainly turned on, and the dirty thoughts running through your mind about your sister in law only made it throb as you grew harder.

Glancing at the stat on the screen, you saw that the proportional size changes had bumped up your cock size some already. From barely four and a half inches to now a much more acceptable six inches long. Having a bigger cock was something you'd wished for since puberty first began, and now it was finally happening.

Of course, why would you be satisfied at just six inches?

You happily tapped around on the screen, shrinking your brother's cock down an inch shorter so yours could grow two inches longer, and you made sure to take some girth and grow your balls as well.

"The growth is everywhere too!" you said, your finger hovering over the confirm button. You tapped it as you locked eyes with your brother's wife.

"I mean, not to be too dirty but it's nice to have my cock getting thicker and longer. What guy doesn't want to be bigger where it really counts?"

You knew that as soon as you finished the sentence, Felicia would likely glance down at your crotch on instinct alone. You felt the familiar warmth start, radiating down every inch of your cock as you felt it swelling. The fact that your jeans were now on the snug side only served to make your growing cock look larger, and you loved how it felt as your dick swelled and begged to be set free, straining against it's undersized prison. The sensation of growing had you as hard as can be, a grin on your face as you knew you now had an impressive eight inch cock, nearly double the size that you were just this morning.

"Won't be long until I'm bigger than my brother. Unless I'm already the real big brother," you said with a smirk. Your ability to grow had you feeling more confident than ever and you loved being more openly sexual with Felicia, eager to see how she reacted to both your obvious erection and your dirty comments.

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