Pipupipupi t1_ishj6ma wrote
Reply to comment by DigNitty in TIL: Sperms were thought to move by wiggling their tails side-to-side, like eels, for 350 years. But research shows that they roll as they move forward like a spinning top. by vect77
Unless you just ejaculated, then it's a full on sprinkler system.
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