Could this be it?

(Sorry if this was discussed before, but I could not find anything on the search tool...)

http://en.wikipedia.org/wiki/Avocado_Declaration

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"Pearl Jam: Pearl Jam
Pearl Jam's longtime green party advocacy has led fans to believe the avocado is a nod to the Avocado Declaration. Initiated by Ralph Nader's 2004 vice-presidential running mate Peter Camejo, the declaration is named for the fruit that's "green on the outside, green on the inside.""

The Avocado is finally making some sense to me...

this was posted in one of the first posts about Avocado....it's still what's in the back of my head everytime i think about it, it makes the most sense.