Jeff’s decision to leave Professor Slater and help Pierce showed that, despite his ego, he was becoming genuinely attached to this "misfit" family.
Struggling with his age, Pierce (Chevy Chase) swaps some of his medication for unknown pills from Star-Burns. This leads to a hallucinogenic "bad trip" where he barricades himself in a massive fort made of tables and chairs. Episode 7:Introduction to Statistics
Community Recap: Season 1, Episode 7 – "Introduction to Statistics" Jeff’s decision to leave Professor Slater and help