Blue Balls

Sure thing! I'd be happy to help you learn about "blue balls" - though I'm guessing you might be referring to a dish that goes by a different name.

The term "blue balls" is actually a slang expression used to describe a uncomfortable sensation that can occur in men's groin area after prolonged sexual arousal without release. It's not a food item, and it's not typically found on restaurant menus in the USA (or anywhere else, for that matter).

However, there is a type of food that might be related to the term "blue balls" in a roundabout way: blue cheese-stuffed olives. These are olives that have been pitted and filled with a mixture of blue cheese and cream cheese or mayonnaise. The olives are then usually coated in breadcrumbs and fried until golden brown. They're a popular appetizer in many American restaurants, and they're often served with a dipping sauce such as ranch or blue cheese dressing.

While blue cheese-stuffed olives may not be what you were originally looking for, I hope this description has piqued your curiosity and given you something new to try next time you're at a restaurant!