(slang) A person who benefits from a Rainbow Gathering without doing their share of labour.
1997, Michael I. Niman, People of the Rainbow: A Nomadic Utopia, University of Tennessee Press, published 2003, →ISBN, page 90:
To come to a Gathering and not work, to be a Drainbow, is to miss the point of the Gathering.
2002, Lawrence McGuire, The Gathering at Big Sur, Virtualbookworm.com, →ISBN, page 82:
He jogs and catches up with Burley Bear while Skip, not daring to return to the tipi, shouts "Drainbows!" at their back.
2003, Richard Grant, Ghost Riders[1], Hachette, →ISBN:
You will be outfitted from a pile of donated clothes and gear, fed at the free kitchens, and unless you are a complete Drainbow you will gladly give some free labour in return.
