Masters And Johnson Bust ‘Upsuck’
20:24–21:07 · 43s
With radiopaque fake semen and X-rays during masturbation, Masters and Johnson found no evidence of the famed "upsuck" hypothesis.
20:24–21:07 · 43s
With radiopaque fake semen and X-rays during masturbation, Masters and Johnson found no evidence of the famed "upsuck" hypothesis.
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