Well, he is a male Lisa so....
Are you saying MyDavid lusts after the cock so much that if one time she came home and told her flatmate, "You'll never guess what happened today! I saw a guy tied up and laid across the rail tracks from the road, so I immediately pulled over, untied him, found that he was quite 'stiff' and so, rode his dick hard and came several times. It was the best sex I've had in a long time" and in response to same the flatmate asked, "Wow! That sounds freaky! Was he tall and good looking?", MyDavid would say, "Dunno. His head and most of the legs were missing", BigC?