The word to describe when you get an awesome "extra" of something and you didn't realize it or have to pay for it. Basic meaning derived from picking out tropical exotic plants, specifically the tillandsia, a free-growing, self-contained plant. They are often affixed to driftwood. Occasionally an extra one will get stuck to the driftwood and when you purchase it, you got a bonus tillandsia (plant).
Jesse: I like this piece of driftwood.

Hayley: And this one has 4 tillandsias instead of 3! There is one stuck.

Jesse: Bonus Tillandsia!

-or-
Hayley: Wow, I found a dollar in the pocket of these thrift store jeans. Bonus Tillandsia!
by hayley s. April 11, 2010
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