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The opposite of buy-in. When a person or group cannot actually commit to something unless they are given something in return, usually for much greater that its actual value, and shamelessly at a ridiculous cost. The seller invests nothing, but lies about ownership when he or she is actually bought at the expense of the organization. There is no sense of pride, only personal gain.
The labor union cannot commit to anything, but if you give them over time or comp time, they will sell-in to anything, just so they can say they have ownership without actually investing their effort or commitment.
by ValientLaborer February 15, 2017
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term used when someone playing basketball breaks someone's ankle then misses an open layup
that man booty!! he sellin!
by vert November 23, 2003
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