I'm trying to market myself a new catchphrase. How does that one work out for you? I would apply it to situations that have me perplexed in such a way that would have me nearly speechless. But I wouldn't be speechless. I would be saying, "Oh, sweet sassafrass."
I hope you like it, because there's a lot of things that have me perplexed on a daily basis. On an hourly basis.