Uploaded January 2017 | Updated September 2026, 2 weeks ago

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Finn plays doctor, while Grass Finn (now going by Fern the Human) revisits Grassy Wizard for answers and to give beatings. Finn's forays into medicine only make things worse, while Fern gets carried away with violence. When it comes to doing no harm, the two boys still got some work to do.

"Do No Harm" was an excellent episode, and Fern's glorious hair as he rides a stolen motorbike into the sunset was amazing.