"like a turtle on a post"

"George Bush in the White House is like a turtle on a post."

"You know he didn't get there by himself."
"You know he doesn't belong there"
"You know there isn't a thing he can do while he is there"
"And all you can think is how to get him off that post!"

This is from Paula Poundstone, on Prairie Home Companion's 2004 "joke show."