A scientist goes to God and says, “We don’t need you anymore. I can create a human from nothing more than a handful of dust.”
“Alright then, let’s see,” God replies.
“No problem,” says the scientist, and he bends over to scoop up some dust.
“Hold on,” God interrupts. “Get your own dust.”
Personally I think it would have been funnier if the last line had been “Make your own dust.”, but hey, that’s just me.