A horny, super quick sexual orgasm.
Can be self-induced (masturbation), acheived with another (sex - anal/oral/handjob/blowjob/etc), or with a group (orgy).
Usually said in informal terms. Most commonly referred to when talking about party sex or in a joke. (ie: It never actually happened and is used in a sexual joke, or it was very meaningless at an orgy.)
Girl 1 : "Oh my gosh, I had the BEST sponza last night!"
Girl 2: "I bet it was horny and explosive!"
Girl 3: "Oh, it was."

Girl 2: "Oohhhh, I see how it is."

OR

Boy 1: "Ohh yeah, I just had an amazing sponza. Better than my girlfriend!"
Boy 2: "Did you just do that now in the bathroom? That sure was fast."
Boy 1: "That's all it takes for a sponza."
by sponzanator February 3, 2011
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To take a fruit by the foot, wrap it entirely around your penis and get engage in fellatio. While the girl is enjoying your succulent fruit phallus, you take it out, put it in her hair, and hump furiously until the fruit by the foot is stuck.
"Omg Jamie, why is your hair shaved off?"
"I got sponza stickered by Chris at the party last night..." THE SPONZA STICKER
by MFbabyKangaroos May 31, 2015
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