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1.
The just incase-case is the case of beer you get before you hit up a bar or a club, so just in case you want to keep partying you've already got a case of beer awaiting you in the car.

Also prevents you from having to find a bootlegger and paying double after the stores have closed.
NEL: Dude after the bar lets hit up the strip club

REY: sounds like a plan,lets get a just incase-case so we'll have our byob taken care of and not have to hit up a bootlegger!
by imthedude April 04, 2011