Re: "Errand of Mercy"
"Go climb a tree." But only because you couldn't actually say "go fuck yourself" on '60's era television.
I think "go climb a tree" has much more style, and it doesn't sound like one is losing one's cool. The alternative is vulgar and uncreative.
"No, I better not look. I just might be in there."
—Foghorn Leghorn, Little Boy Boo