When the principal decides you will be suspended from the school for... various reasons. Then thinks long and hard about it and says, "Ya know, I'm gonna expel him/her too."
"He got expended from school for choking a person until his face turned purple."

"One of these days, Erica needs to get expended. Because she's the root of all this drama."
by Katie Marie Bell October 15, 2011
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That friend thats around when you need them but not when you want them. Close to second hand friend but an expendable friend is constantly treated like they dont matter, regardless of how far they go for another. An expendable friend can be replaced very easily. Despite being told their important.
"Man, they(he/she) always third wheels those two, what an expendable friend"
by OctoShockeR403 November 11, 2017
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The one that will definitely not survive. Taken from the TV series "Star Trek", which frequently introduces a new character (often wearing a red shirt), who dies early on, showing the power of that episode's enemy force. This is character is killed so that the regulars, Kirk, Spock, Sulu, Uhura, Chekov, and Scotty, can all remain unharmed.
Good thing James wore his red shirt, because if we have to throw someone to the wolves tonight, it's gonna be our expendable crew member.
by ChuckChaser69 June 24, 2008
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In a marvel movie, the final fight scene always has good and bad armies of nameless extras and clones that get wiped out, leaving the heroes as the only survivors
The Wakandans, for example, should not be an expendable population
by socraticmethodman December 26, 2022
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The Purposeful Expendable Boyfriend is a job a boy or man plays to make sure the newly broken up with girl isn't talked into having any sort of sexual interaction with a person she will regret it with during the " Broken Heart " phase of after breaking up with someone. Or even breaking up with someone she really cares about during an already fragile phase.
" Why aren't you mad or sad? I just broke up with you?? " " Don't you see? I'm being a PEB - Purposeful Expendable Boyfriend. To make sure no one gets to you and you don't have to breakup with someone who you care about. "
by Someone For Target Prastice November 24, 2016
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