Why wasn't it Keanu's number?

So apparently over the weekend Johnny Knoxville, being the prankster that he is, hired a plane to fly over the Polaroid beach house (where he knew Luke Wilson would be) with a banner on the back saying "Luke Wilson's phone number is 310-500-0082." And crazy enough, it was his real number. Haha. Needless to say that number is now out of service and Luke had to change it because he got so many phone calls that day. I just want to know what he's going to do to get Johnny back.... we'll just have to wait and see.