Don't mean to sound ignorant, ...
... but what the hell is a sloppy joe?
i assume it is an American thing.
Yes, like most good things, it's American.
I don't see why asking a question here, rather than firing up Google, makes me ignorant. I didn't know what it was, so I asked the person who mentioned it. It's how we learn.
But thank you for your explanation.
1. Lacking education or knowledge.
2. Showing or arising from a lack of education or knowledge: an ignorant mistake.
3. Unaware or uninformed.
Margo lives in Oz-tralia. I suspect they forego many of the "delights" which are common in the United States.