To call in sick when actually hungover. Stems from the many people who call off on the 5th of July.
Michelle just called in sick, but I saw her at the bar at 1:30 last night... she's pleading the 5th.
by Leeny May 9, 2008
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A refusal to answer a question because the response could hold self incriminating evidence.
Cop: We know you have drugs in this house. Where are they?!

You: Ask me anymore questions and I plead the 5th!
by RiaLee March 20, 2008
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Not admit to being guilty or innocent, because doing either may get you into trouble.
Friend: Did you bring back edibles from Colorado?

Me: I plead the 5th!
by Yeeha234 August 23, 2017
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Pleading the 5th means to not self-incriminate yourself, but it has the connotation of meaning that you did it.
The reason for this connotation is because if you didn't do it, why wouldn't you just say no?
It's a way of not saying "yes you did something" but hinting that you did, but they can't really say you hinted at it.
Bob: Did you have sex with my girlfriend?
Joe: I plead the 5th
by Alice Hatterson July 18, 2018
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My friend is high and can't answer with a simple yes or no.
Sam: "Have you masturbated?"
Friend: "I plead the 5th."
by Manasama October 14, 2014
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