Which human body part called sweet bread?

There is no human body part called "sweet bread." This phrase is likely a misunderstanding or a colloquial term used in a specific region or culture.

It's possible you're thinking of:

* The pancreas: This organ produces insulin and glucagon, hormones that regulate blood sugar levels. However, it is not referred to as "sweet bread" in any widely recognized context.

* A type of bread: There are many types of sweet bread, such as brioche, challah, and sweet rolls.

* A slang term: Some slang terms might use "sweet bread" to refer to something else, but without context, it's impossible to know for sure.

If you can provide more context or information about where you heard this phrase, I might be able to provide a more accurate answer.