Just joking....I really do know what teeter means. But really you're right, "teeters on the brink?" Reminds me of a CNN guy a year or so ago talking about gay men and marriage. He said something like, "For now they are considering a backdoor approach." !!!!!!
That's Jay Leno-like material.
I know you knew what teeter means. I'm just playin' dumb, which comes natural.