Smack? In Great Yarmouth? Well, you’ve got to try it.
I’m assuming this is a reference to a boat- a fishing vessel- rather than drugs, but you never know.
We’d wandered in hoping for lunch, but no food seemed evident, despite the boards outside. There was a good choice of ale though, and the only real problem was the doors being wide open on a coldish day: the place was freezing, so only one (excellent, local) beer.