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Stands for "just shat laughing"
Ahahaha I literally jsl cuz of that.
by Dorkybork December 15, 2017
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JSL, also known as Jam Stick Limit, it is the limit of when using a jam container is not advised, because it is sticky.
Joe: Wow, this jam container is stuck to my hand.
Jack: I told you it was past its JSL
by Joe Jam Stick February 08, 2010
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