Assertion: foreskin's surface | /r/HasProperty | inner
Facets:
Source sentences:
text: While its outer appearance is the same as any other skin on the penis, the foreskin is home to many nerve bundles and blood cells, and its inner surface is similar to the inside of your mouth, helping the glans stay naturally lubricated.
text: The foreskin is damp because moisture escapes through its inner surface.