In an episode aired very out of place in the season's timeline, Robbie is entering High School and Mike is about to start college. (This show aired near the end of the season, and both had been in those schools for the entire season). Robbie is befriended by a star High School athlete, but upon learning about this Mike isn't impressed, as he doesn't have such a high opinion of "Chug". The difference of opinion causes some friction between the two brothers when Mike warns that Chug is only befriending Robbie to get something of him. Mike turns out to be right when Chug asks Robbie to rig an election.
—vranger