Sniffer Dog

Man sits next to a guy with a dog on a plane and asks "Is he a guide dog?"

The guy replies, "No, im a Customs Officer and he's a sniffer dog, watch this...." and says to the dog "Search!"

The dog goes off, comes back, and puts one paw on his lap. "Heroin!" the Officer says, and makes a note of the passenger.

The dog comes back again, and puts two paws on his lap. "Coke!" the Officer says.

The dog comes back again, and shits all over the seat. "Whats that then?" the man asks. The Officer replies, " A fucking bomb!..."