1. A paradise island one can travel to with xanax filling their sails.
2. A state of consciousness induced by high doses (not overdoses) of the benzodiazepine alprazolam (xanax).
Bernard: "Who's that girl over there? She looks like a zombie...like she doesn't have a care in the world!"
Fanny: "Oh, that's Lenina. She's usually pretty lively and devilishly pneumatic, but today she set sail for xanzibar island"
Bernard: "Oh my, that saucy lass!"