Since we are headed for Florida and the weather's been crazy I have this suitcase of warm weather clothes and this justincase filled will cooler weather clothes.
by rubinator December 19, 2010

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."
"Let me have your phone number justincasers."
by mindopener April 03, 2009
