I was quite surprised at the JITB menu the first time I entered one: tacos, burgers, fried chicken. I don't think any of it was special.

I realized that Jack was a good descriptor, as in jack of all trades, master of none. Substitute foods for trades.

I used to stop in periodically, though to update the jack-head for my car antenna. I'm thinking they don't do them anymore with so few cars having the proper sort of antenna.