I came up with that line in the shower today and thought it was pretty funny, a nice little triple. But then I started dissecting it (don't do this to jokes) and wondering if the joke were ethical in its assumptions etcetcetc. And then I began to wonder if this would count as a dirty joke. But I'm no expert on these things. I just say crap as I make it up. So I'll open it up to the rest of you. Is this joke worthy of preservation? And if so, under what circumstances could it be best deployed?