She wants to know how you compare to your brother

She takes her hand away from her mouth, but her eyes stay on your erection. She steps toward you splashing in the water.

“I’ve always been curious about genetics. Like you have the same eye, hair color and nose as your brother. Do you think you have the same penis?”

She’s not conservative whatsoever. You have no clue how this alcoholic, sexy underwear woman made it in your family, but you don’t care. You only want to see those tits that are begging to be released from that wet bra.

You say, “I’ll show you mine, if you show me yours.”

She smiles and looks around the river walk. “You really are wild. I underestimated you. I thought you’d be stuck up like your wife.”

“Is it a deal?”

She bites her lip, “Fuck it. Let’s do it. You show me yours first. I’m so curious.”

Right there in a public fountain, you peel your wet underwear off your hard cock.

Your sister-in-law smiles, gazing at it, analyzing it. Your own wife has never given it that much attention. She meets your eyes, “Mine if I touch it?”

Your heart jumps up into your throat. You can’t speak, so you nod.

She presses her fingers on your cock and tilts it forward. A fingernail traces down your shaft.

“You have the same vein.”

Her thumb rubs on your sensitive ridge. “The same shaped head.”

She lifts her hand and your cock snaps back up.

“But other than that, there’s a major difference between you and your little brother.”

My heart pounds. Your hands shake. You lose focus of her nipples. Her cleavage blurs. You look up at her face. You stutter as you ask, “Whawhat’s the difference?”

“One of you is much bigger than the other.”

You try to take big deep breaths. Why does it feel like you’re having a panic attack? Why does your brother’s dick size matter? You should be telling her to toss that sexy bra in the water; free the nipple.

But you have to know. You have to ask: