Elf: Kevyn, I brought us some new pets.
Kevyn: Why? Norwest will just kill and eat them.
Elf: Not these. Corporal Towwick showed me Corporal Pi's contraband "ant farm."
Kevyn: Ants?! I don't want ants in our cabin!
Elf: They're not ants. If you look closely you'll see that these are home-grown macro, micro, and nanoassemblers.
Kevyn: And I definitely don't want homemade nanotech running loose in my cabin.
Elf: And that's not sand. It's Boomex.