A monster among monsters

Your heart catches in your throat. From what you knew about NF biology, they could get much much bigger than their flaccid lengths.

"So..uh...how big can it get?" you ask nervously.

"Umm...last year it was around 14 inches. I..I... haven't checked since. The doctor told me that I...that I might not be done growing yet." 14 INCHES! That was as big as the biggest futanari pornstar in the world right now, and she WASN'T EVEN DONE GROWING!!

You drool at the thought of a delicious and impossibly large cock.

"Are you drooling?" she asks.

"What?...Oh.." you quickly wipe it off. "I actually like that idea." you say with embarrassment. "I hope you don't mind me saying that."

"Not at all. I'm happy you think of me that way." Riya beams.

"Is it okay if we check now? I want to see how big it can get."

Riya nods. You gently grab her thick, flaccid shaft and begin stroking it. You move up and sit between her legs and continue stroking her member.

"Yo..you have to grab it harder. And can...and can you str..stroke the tip. Ever since my thing became bigger than 10 inches, I...I always had trouble getting it up quickly. And once it's hard, it won't go down until at least one orgasm. So..so yo...you will ha..have to take responsibility for it." she demands with mock seriousness.

"I will."

You stroke her harder with your left hand and grab and squeeze her cock head with your right. You immediately feel her twitch. You keep stroking and squeezing and before you know it, her cock starts filling up with blood. You were barely able to circle your hand around her flaccid meat and now, it had surpassed your grip. You watch with awe and fear and her growing length.

IT WAS MASSIVE. There was NO WAY such sizes could exist. It was just too huge!! It was bigger than those Mr. Hankey dildos that you saw online.

"It's fully hard." she says. You quickly get up and search for the measuring tape inside your study table and bring it over. You measure it from the base to the tip. Riya squirms a little at your touch.

16 inches. 16 GODDAMN INCHES LONG!! She had already beaten the biggest futanari pornstar in the world. You measure her circumference at the base where it was the thickest and it comes out to be 12.5 inches. Her thickness gradually tapered off at the top where it was just 8.5 inches in circumference.

"Damn! I think you might have the biggest dick in the world!"

"I'd rather not have it though."

"Don't be like that. I know NFs usually have a harder time accepting themselves because of what our society says but it shouldn't matter what they say. I'll always be here for you."

Riya gives you a shy smiles. She really was beautiful in every way, both inside and outside. So what if she made your member look like a little baby, so what if society thought you'd be emasculated if you dated someone bigger than, you would not change it for the world, EVER. You go ahead and give Riya a big hug.

"Ahem..." Riya gets your attention.

"What?"

"I'm still hard. You promised!"

"I'm on it."

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Hey guys. That one took a bit longer than I expected. I scoured the internet to find any good cock comparison sites and this one by far takes the cake. You can overlap and compare multiple cocks at the same time. The next part will be coming soon. In the meantime, you guys can leave a like or comment if you are enjoying this arc. Peace out!