When a male has his penis in his hand whilst urinating in to a wheat field whilst being hugged by 2 men.

when you're hungover as shit after a spending a night drunk as a skunk

When you are hooking up with someone and you take the position of the dominant person in the scenario. Similar to how a farmer would ride a tractor for an extended amount of time til he/she is satisfied.

The act of driving a tractor or performing a tractor like operation.

When you smoke out of a bong backwards.

I.E. Putting tin foil with small holes on top and smoking from the bowl.