Your pee hole is actually pretty big. 5-7mm on average for both men and women. Someone I work with who shall go unnamed took the calipers in the bathroom and even validated it. We need to know this for our pee simulating robot

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What’s interesting is it can expand to 8-10mm due to the elasticity of ureteral cells during micturition.

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Yes!!! Hahahaha we talked about that too because we need expandable nozzle lol 

It’s so big!!!!