Q: What's a 'punkin roller'?

Factual Questions
1

No, really. Sure, Jimmy Stuart starts to tell a story about a guy who was one at the end of “Destry Rides Again” (1939), but what Is a “punkin roller”? Quotes on the internet alude to a cowboy, a type of farmer/rancher, a type of camping equipment, or even a type of gun. I know its a US expression, and it may be out of use. Still, if possible, I’d like to know.

So, What’s a ‘punkin roller’?

2

A farmer, esp. as opposed to a cattleman.

3

It’s a slightyly slurred rendition of “pumpkin roller,” no doubt alluding to a farmer managing his crops.