Anon-e-moose:
There's an old WW II song about that.
Well, you call this thing a biscuit, then tell us why it's flat
And the chocolate chips all over it, just try explaining that!
You English call this English, but you're mixing up our troops
So, bold, brave, and undaunted, we'll eat cookies on the stoop!
Pot likker is actually the broth collards are cooked in, and cathead biscuits are big drop biscuits, about the size of a tomcat's head. Blackeyed peas are prepared on New Year's day with various kinds of pork, and this meal, eaten on January 1, is supposed to bring prosperity.
Chances are, anyplace in the U.S. Southern Tier, if you order peas, you'll get blackeye peas. The other kind are "English peas", just as, if you order "tea", you'll get ice tea; for the other kind, you request "hot tea".
"Pot likker" as I said, implies only innocent collards, though I point out pot is a vegetable, and therefore good for you.