"Who Says "Rednecks" Aren't Real Bright?" joke

"Hello, is this the FBI?"
"Yes. What can I do for you?"
"I'm calling to report about my neighbor Virgil Smith. He is hiding
marijuana inside his firewood!"
"Thank you very much for the call, sir."
The next day, the FBI agents descend on Virgil's house. They search the shed where the firewood is kept. Using axes, they split every piece of wood, but find no marijuana. They sneer at Virgil and leave. The phone rings at Virgil's house.
"Hey, Virgil! This here is Floyd. Did the FBI come?"
"Yeah!"
"Did they split your firewood?"
"Yep."
"Happy Birthday, buddy!"