Yes the confusion of function is not "natural" ,just as rape is not "natural" a totally disrespectful action which is inhuman.
Think about what drives those to act this way , same as that extreme motivation of the "shadow' of Islam , few know about the shadow self , that is the lose of life/light that is our attendant from time to time experiences .
Again the need for stimulus of the nerve ending on the tip of the penis . ???