Being a well-hung man's first suitable posture.

Once it enables him to control over his depth of penetration.

In the Perfumed Garden, Nefzawaki takes into account physical discrepancies between men and women.

Whence, for instance, this classic position in which a well-hung man may easily adjust his thrusts so as not to hurt his lover.

It's a concern that worth its while when partners happen to be of unequal builds.