The Slugs

A few agonizingly slow minutes passed as his urethra expanded around it, allowing it inside his body, deeper and deeper – and then, another _pop_ of relief as it finally reached his… balls, his bladder, bruce didn't even know, but he felt that warm glow intensify

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Knot Lucky

The leopard shark's huge cock swelled outwards, the surges of cum up the urethra visible to the eye as he delivered again and again.

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Protein Powder

You pull him back, making him stare at your gaping urethra before you stuff his head in with a squish.

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"The Real Deal" - Chapter 10

It was a gentle poke inside his urethra... a cold, sharp, jab. and then again, this time, deeper.

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Portal Buddies - Chapter 2 [Patreon Serial]

That gel was the only thing that kept the dry wood from grouting the inside of his cock, as it stretched his urethra impossibly wide.

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Getting Played With

More cloudy beads of precum occasionally leaked from the urethra, only for your tongue to smear it against glans and taste buds. your toes curled at the flavor.

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What If...

In the center was a rather long, puffy slit, being a bit large for a urethra.

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