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noun. Generally used as a moniker for an orca fat girl you've had sex with but are too embarrassed to acknowledge by name when discussing the night with your friends. Named for the dawning realization of just how fat she is, when one picks up her panties from the bedroom floor and they are large enough to use as a spinnaker on a medium sized yacht.
"Normally I go for skinny, athletic chics; but after 6 beers and a half a bottle of scotch I often wake up next to spinnaker-panties in the morning. When I picked them up, her panties stretched my entire arm span."
by quinndiesel January 11, 2012
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