Tropic Thunder Question: I'm a lead farmer motherfu-ker!?

Question

Hey, I just saw Tropic Thunder for my second time yesterday and was wondering what Osiris (Robert Downey Junior) means by "lead farmer"? The line again is: I'm a lead farmer motherfu-cker!

He says it when they ambush the drug plantation.

Answer 1

in the scene kirk lazarus has to pretend to be a chinese farmer, and attempts to lie to the vietnamese kid about him being a wheat farmer. he almost gets away and then he says hes gonna go back to his poppy field. the kid calls him on his sh*t and says he lied about his occupation and accuses him of being an undercover american. lazarus then whips out his machineguns, starts sprayin, and says hes a lead farmer, mothafu*ker.

Answer 2

Lead, as in the stuff bullets are made of. Then he starts shooting.

Answer 3

He just shot off like a pant load of ammo/bullets-   lead/shrapnel    so he's a lead farmer   get it??