Top Definition
North American Shetland Sheepbreeders Association
I went to the NASSA today and stole some sheep while still in Shetland.
by ithinkyoudiedman July 19, 2008
1 more definition
Another name for someone who has so much buttsex that they could literally launch a NASA space shuttle out of their gaping butthole.
Guy1-"She has so much buttsex I'm sure a rocket could launch out of her ass."
Guy2-"NASSA"
by wsucoug09 February 03, 2010

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