Male urethra has spiral RIFLE inside , rifling, to create a coherent straight non splatter stream. This evolutionary marvel has confounded many biologist anthropologists, but its probably for marking territory on trees better millions of years ago. Some biologists claim the spiraling helps liquid scour off infective debris inside urethra on urethra walls.
The inside of the urethra has a spiral groove (like rifling in a gun barrel), which makes the urine flow in a wide stream.
[ + ] try
[ - ] try 3 points 3.8 yearsJul 22, 2021 15:51:30 ago (+3/-0)
Male urethra has spiral RIFLE inside , rifling, to create a coherent straight non splatter stream. This evolutionary marvel has confounded many biologist anthropologists, but its probably for marking territory on trees better millions of years ago. Some biologists claim the spiraling helps liquid scour off infective debris inside urethra on urethra walls.
from :
https://www.wikidoc.org/index.php/Urethra
TL/DR: That water bottle trick splatters, real pee would splatter less
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