This episode re-uses a joke about volunteering that also occurs in S4E06 - 3rd Wheel. In this episode, Jeff asks Jennifer if she is volunteering to read to the elderly as though it was court-mandated for "Glug. Glug. Pow! Pow!" This is similar to S4E06 where Russell asks Timmy if he is volunteering for the neighborhood garden, as though it were court-mandated for "Drinky. Drinky. Swervey? Swervey?".