The Old Improbable Island Wiki

Nude. Naked. Unclothed. In the buff. Au naturale.
This means you aren't wearing any armor, and is usually considered a bad idea¹⁾²⁾³⁾ ⁴⁾ unless you want to die.

¹⁾

Unless you're a kittymorph, in which case it's a great idea!

²⁾

Also it's encouraged to be naked in the Grassy Meadow.

³⁾

But not if you're ugly, like Hermein.

⁴⁾

Hermein may be ugly, but he's tougher than Marv from Sin City.