You know at least one of them would be partially deaf. And it'd be Cadman's fault. OOooooh, it could be John and Rodney would rant and rant and rant and John would be turned the wrong way and Rodney would be all "Dammit! I want to talk in your other ear!!!!" and John would say, "You want Everclear?"

"Other ear!! I want to talk in your other ear!"

"Jeez, okay, just a minute." ::John shuffles over to the fridge and gets Rodney a beer:

"NO, you moron, your other ear!!!!"

And then he realizes that John has a tiny little smile on his face and starts spluttering because he fell for it, again.