So let me understand the use of the description " penis"...this is used when referring to males...right, and this is acceptable...ok, then, when referring to the female we should use the description "vagina"...right? It's only fair, and certainly not demeaning to either gender? Now go back and re-read the post here and subistute the gender with their gential part and see how offending it is.
What's good for the goose is good for the gander.
SW