whilst trying to show off, or just having a good time in the company of the opposite sex, something embarressing happens to you, a quick cover-up and rebound it to yeall "it's personal!" to the offending object and pretend that a grudge has been started. this avoids embaressment to you and is, when done properly, a very good come-back. Note: Utilising this term may not actually have the above result but may further enhance your humliation.
I was riding my scooter when i tried to pull a sick trick and landed on a speed bumb. this made me face plant into the gravel. i then jumped up and, infuriated, started attacking the offending speed bump with much ferocity, exclaiming loudly "it's personal!"