The FBI

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