Making sure you have a condom with you before going out for a night of drunken debauchery when it is more likely than not that you will end up hooking up with some skeezy rotten-crotch at the end of the night.
Chance: "Yo G. You packin' heat tonight?"
Hunter: "Fo real B. Last weekend I ended up bare backin' that nasty bander-snatch and had to go to the clinic on Monday to get my shit checked. You bet your sweet nuggets I'm packin' heat from now on!"