I'm new here and still trying to figure things out. I hope this is the place to ask.
a picnic is the shoulder and arm. It usually comes with a layer of skin. As solar said a whole shoulder includes the butt
I got this off the web
I've talked with a couple of butchers and they said that the term Boston Butt is a regional name that's not used in my area but when I asked them about the pork shoulders they were selling and how they compare to Boston Butt they said they're the same thing. But you're (boykjo) saying the pork shoulder is below the butt. I thought the picnic was below the butt.
I'm sort of confused here. What am I missing?
With a little study, you will readily recognize them.
In my area the butt is usually called pork butt or a Boston butt or shoulder butt roast. The different terminology would be confusing, but you will soon be able to identify them by sight.
Good luck and good smoking.