An impossible situation that serves no purpose anyway. Something unachievable yet completely irrelevant, like trying to get a liveferret into an novelty balloon for no apparent reason.
1. Phil had three minutes to shave his muttonchops before his wife got home, not that she'd notice anyway. It was a total balloon ferret
2. Guy to insane girlfriend "You want me to stay awake with you through all of the Twilight movies? What a fucking balloon ferret."