Givafuconium - a rare material, which is used by the human brain to scavenge and remove bullshit from external sources. As givafuconium is depleted, the subject becomes increasingly agitated and irritable. There are only a few methods to restore normal levels, such as vacation time, however, with proper management (removal of sources of depletion) a normal human can survive for months without external replenishment.
Givafuconium also decays naturally, and over time an individual's ability to store it is reduced - explaining the YKGOML ("You Kids! Get Off My Lawn!") syndrome.
Unfortunately, of late I have a few cow-orkers who have been seriously depleting my stores of givafuconium, and with the upcoming elections here in the US, I fear my supply may be too low.