I always suspected the "Giving The Houseguest Their Key" moments were heavily staged. It would be nearly impossible for a CBS camera crew to just pop right into their lives and blindside them with a fake key and barely any time to actually pack / say goodbyes.
I laughed at the thought of all the tag-lines that they always have contestants recite. That's just one of the many, many reasons why I could never go on "Big Brother." I'd quit, on the spot, the first time they tried to put inauthentic words into my mouth.