Is this a granddad joke?

Don’t worry – Anthropic has a plan for that!

The oil can also be more practical than medicinal: I know yard crew workers who slather down in motor oil when exposed to poison ivy – not to negate the effects of the plant’s urushiol oil, but to provide a visual cue as to when they’ve scrubbed thoroughly enough with soap and water to remove ANY oil: If you still see motor oil, you haven’t washed enough to remove the urushiol, either.