I saw that before! It makes me laugh every time! lol
I like this one~

Old English Sheep Dog: Light bulb? I'm sorry, but I don't see a light bulb!

And this one~

7. German Shepherd: I'll change it as soon as I've led these people from the dark, check to make sure I haven't missed any, and make just one more perimeter patrol to see that no one has tried to take advantage of the situation.