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Verb; To be in such a state of exhaustion and relaxation that one collapses onto and/or sinks/melts into one's seat or wherever he or she may land.

An extreme version of Chillaxation.

relax collapse sink melt chillax
The twins got themselves so wound up that by the end of the day they just collaxed on the couch.
by NillaNillaNote August 27, 2012
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