I ended up using the "jack shack" term a little bit ago at Wal-Mart. THere is this Nail and WAX place that is open at all hours of the night and it looks real dark in there.

I was checking out at the Wal-mart market grocier and I said all wide eyed. "Do you know anything about that nail place? Someone told me it is a JACK Shack!!!!" The check out lady thought it was pretty funny.