The phrase is the hook of a Russian Govnovoz song clip that circulates on Russian language soundboards, with this version tagged as a mashup titled Govnovoz by the artist Mister Vi. A govnovoz removes liquid waste, and in slang the word already carries a crude, self deprecating joke about doing the worst possible job. The 40 years under anesthesia line sums up that character in one image, working a lifetime in a daze, which is why Russian speaking users keep reposting it for failure, exhaustion, and pointless work.