Knock knock jokes?

Matt was moved to a regular room this evening and it was a bit of a mess, again, like every move he's had so far. It is a good sign, medically, that he can be moved out of the special care unit, but its always scary to get used to a new place. I'm actually going to be looking at rehab centers tomorrow and hopefully he'll get to be moving to one soon.

All day Matt has been trying to talk to us and I'm only able to make out a few things. One word he kept saying over and over all day that had lots of clicks and I couldn't make it out. Finally tonight, in the middle of the move, I could finally make it out when he said "Guess what?" so I asked "What?" and he said "Chicken butt." It was the perfect thing - we quit crying and laughed instead. Then all the clicks made sense - he'd been trying to tell me a knock knock joke all day! He says knock, knock, knock, knock a bunch of times, and he told me that Steve was there, but I can't make out anything else. So if anybody knows a knock knock joke with Steve as the punch line, let me know - it might help me decipher what he's saying!