Fellow notices an ad in the paper: "Hunting dog for sale. $10,000."

He calls the vendor and asks what's so special about the dog. Guy says, "He will find ducks like there's no tomorrow. Fellow asks if he can try the dog out for a day. Guy says "Yes."

He returns to the owner after about one hour. Tells the owner that he shot the dog. Owner asks, "Why?"

Fellow says, "I sent him off with the command, 'find ducks', just as you said. The dog returned after four minutes with an erection that was showing, a long piece of wood in his teeth, a wild look in his eyes, shakin' all over, and he started to hump my leg. I figured the dog had gone crazy so I shot him."

The owner said, "You just didn't understand what he was trying to tell you!"

Guy says, "What was he tryin' to tell me?"

Owner repiled, "He was trying to tell you that he'd found more fuckin' ducks than you can shake a stick at."

(I have shortened the joke. Lengthen according to audience and degree of sobriety--both yours and the listeners.)

PS Have a nice day.