Where is the 5M's Head?

I'm more than a little concerned about the 5M's interest in the Dude. True, he is virile. He has managed to sire 6 children. Good for him. However, who in his/her right mind would produce 6 children these days?
My concern is not so much with the Dude's sperm count as with the way the Dude is talking to the 5M. True, the 5M is desperate. And desperation breeds bad choices. Is the 5M really "open" to this particular possibility? We all can see why the 5M might find this heady conversation so refreshing after dealing with Mr. Asexual for so long. But, this Dude is a pervert, a weirdo and a freak.
I suspect this dirty talk went down at a nasty little cougar den called the Crab Shack. A good place to pick up crabs.