2 definitions by fishbait

to put inside or pull inside, i.e. have sex or get barreled (tubed) surfing... i.e. the most pleasurable things you can do. term can be adapted to other situations requiring guts/skill

check out that chick, I like puinsai...

or

did you see Rodney's wave, he puinsai...
by fishbait July 13, 2006
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An individual who commits oral on a girl at the beach, thus leaving sand in his/her mouth. The end result: a sandy surprise.
Wow! That kid Jack is a real sand muncher!
by fishbait June 19, 2020
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