Leans into it.

A group of milfs, babying him and cooing over his tiny penis? Jackpot!

He looks down and pretends to be embarrassed. "Ok...yeah, maybe I'm a bit younger, but that doesn't mean you can tease me like that..."

"Oh sweetheart, your teenie peenie weenie is so cute. We weren't making fun of you."

"Yeah, you look grown up for your age. But why are you running around naked? Be honest..."

He looked to the floor. "I...it felt nice."

"It felt nice!?"

They all let out a chorus of awwwwwws.

"We have an adorable wittle nudist on our hands!"

"I'm sure all the ladies will love your nakie little peepee!"

"You didn't get seen by any girls...did you?"

John was almost throbbing at this point. Not that the ladies could tell. He tried to sound as meek as possible. "Yes...I bunch of girls saw me and they made fun of me..."

They all gasped. "Really? What did they say?"

"They said it was the smallest thing they ever seen. But it's not that small...is it?"

"Honey...for an 18 year old, it's puny."

"The smallest little weenie we've ever seen."

"My son was bigger when he was in diapers."

"But you're still such a cutie."

"It's not about the size, it's the motion of the ocean."

He could tell that they were torn between making fun of him and comforting him. He played the role of 18 year old pretending he was a child pretending to be an 18 year old perfectly. As they looked him over, they wondered what to do with him and his leaking little nubby.