A man wanted a watchdog, so he went to the pet store. He asks the clerk, "Do you have a good watchdog?" The clerk replies, "You're in luck; I have one left." She comes back with a chihuahua. The man, a little ticked off, says "What the hell do I need a chihuahua for? That's not a watchdog!" The clerk replies, "But this is a special watchdog. He knows karate."

The clerk takes the chihuahua and the man out to an alley, where there is some trashy furniture. The clerk points to a chair and says, "Karate that chair!" Less than a second later, the chihuahua reduces the chair to sawdust. The clerk points to a sofa and commands the dog to "Karate that sofa!" Repeat performance. The man, amazed, buys the dog for $100 and takes it home.

When he gets home, the man shows his wife the chihuahua proclaiming, "Honey, I got you a watchdog!" The wife yells, "That isn't a watchdog, for cryin' out loud! You wasted your money!" The man calmly replies, "This is a special watchdog. He knows karate."

The wife, flustered, shouts: "Karate?!? Karate my ass!!!"