I don't know, it made me laugh! That has got to be one of the worst jokes I've ever heard.
I have the same problem as Emzyyy, I laugh way too much at random things that I alone think are hilarious!
One of my many favorite jokes is: A pan of muffins sittin' in the oven, one says "Is it just me or is it getting hotter in here?" and then the one next to it says, "OMG A TALKING MUFFIN!"