Jim Rome's sports show kept a running news commentary on the sport of Sarcastaball throughout the episode. He spoke in short bursts of catch phases such as "scratch that" and changing his mind about a subject mid-way through explaining it. This speech pattern appeared he was being sarcastic at all times.
When Jim Rome interviewed Randy Marsh on his show about what it was like to coach the Denver Broncos Sarcastaball team, Randy starts imitating Jim's speech pattern subconsciously. He finally notices this while talking to his wife, thus causing him to realize he had a problem with uncontrollable sarcasm.