In RTAA #133, at the old office, Burnie finally gets his computer back when Gavin goes back to England, but suddenly everyone wants to use it. Then, Burnie tries to explain how muting a user on Twitter works to a caveman.
@JakeHCoker - He was on an airplane one where he tried to smuggle 2 knives and dropped coffee. No idea if he has been any other episode, but I think he has.