After the scene at the office party, where George slips his boss a mickey, we see him back at Jerry's apartment, continuing their discussion about what jobs George could get. Thia was an implication that George got caught drugging him and lost out on taking his boss up on the offer to work there again...
If George's boss was one of those people who was "here" and always a "winner" - how is it that George, someone who was "there" and will always be a "loser", got away with drugging him?