Humans are nearly the same density as water, so they (and their penises by extension) are nearly neutrally buoyant. Neutral buoyancy means things don't float up or sink down, but rather they stay in place.
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Anonymous13w
Sink
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Anonymous13w
It’s attached to me so like, where ever I’m at, it’s at
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Anonymous13w
Levitates
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Anonymous#412w
She’s asking cause breasts are mostly made of fat tissue, which is less dense than water and will float up.