i'm quite sure the spelling is awfully wrong and i'm also quite sure this is a part of the body (that you can possibly break).
can anyone help me understand what this slice of barnicle is? :/
RonBee is right, but there is also another interpretation for barnacle which can explain this misunderstanding.
Here is what my English dictionary says :
"Barnacle - European goose smaller than the brant; breeds in the far north." [Barnacle goose]
Brant - any of several small, dark , wild geese of the genus Branta that breed in Arctic regions, having a black neck and head.
Therefore, "a slice of barnacle " is ,in fact, a slice of wild goose meat ".