Ever want to make a whirpool-like vortex out of your semen? Well, according to this published study, it's not too difficult:
Step 1: Concentrate the sperm in your semen.
Step 2: Put it into a annular-shaped container (a ring formed by two concentric circles).
Step 3: Stand back to admire the beauty that is your very own semen vortex.
Apparently, concentrating the sperm induces them to align and swim in the same direction around the ring, creating a vortex.
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