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an experiment in endless longing by nepobebe for sparebikes
Fandoms: Superman (Movie 2025), The Batman (Movie 2022)
30 Dec 2025
Tags
Summary
"I should have taken a picture…" Bruce taps his finger against the tip of one of Kal's cocks. It flexes itself, the hole at the top spreading to release another glob of messy, clear precum. "For a before-and-after comparison. Do these look different outside of your rut? Not as long or thick?"
Bruce taps the head again, and Kal can't control the sharp breath that wheezes out of him.
"H-hnng… uhm…" Kal licks his lips. He closes his eyes to try to keep his concentration, but that, too, is useless when Bruce begins to lightly circle the small, gaped slit at the top of the closest tentacle.
"Try to focus," Bruce says. "I know it must be intense, Superman. Does this hurt?"
Bruce puts more pressure at the tip, as if he's trying to fit his thick finger inside of the too-tiny hole. Kal gurgles uselessly, hands shooting up to grab Bruce's wrist even as his eyes roll towards the back of his head.
"Doc—ahhg… Dr. Wayne…!"
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Or, Kal-El goes to his trusted friend, Dr. Bruce Wayne, for help with his Kryptonian rut for the very first time.
Neither of them expects the eggs to happen.