Interesting: The foreskin is looser than the surrounding skin. If you do not use proper lubrication you may be causing enough friction to cut the skin, especially during very aggressive sex.
Answered 1/29/2017
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2 doctors weighed in across 2 answers
2 doctors weighed in across 2 answers
3 doctors weighed in across 2 answers
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A doctor has provided 1 answer
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