Top Definition
The reason for taking preparatory or precautionary measures. It is something you do just in case a just-in-case situation occurs. It is an answer to a why question to explain something you are doing to prepare for a just-in-case situation.
Q: "Why are you bringing three roles of duct tape?" A: "justincasers"


"Let me have your phone number justincasers."

by mindopener April 03, 2009

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