people are acting like this sauce is a new/unusual thing. It's been in BKs near me for a while. Is it a regional thing? I didn't realize it wasn't available at most restaurants.
It's not that, it's that Onion Rings with Zesty sauce isn't a standard/automatic thing, so that's the unusual part. Feel free to ask for it, don't be shocked if it isn't just offered up.
Like I said, I like my BK fries with sweet and sour sauce, but I know that ketchup is the norm, so i have to ask for it if I want it. If you want something non-standard, and are too shy to ask for it, not sure what to tell you there. If asking for sauce or ketchup packets at BK is too far outside the comfort zone, world must be a scary place indeed...