You say Berenstain Bears, we say Berenstein Bears It is a called the "Mandela Effect" and it involves people taking notice of things they always assumed about the world and things written about the world today that don't match up. From this discrepancy, some believe that at some point, some of us moved on to an alternate reality that doesn't match up with our previous world. The term came from the phenomenon of people who believed Nelson Mandela had died in prison and were shocked to find out he hadn't. This is easily explained away by the same phenomenon that has some of us singing, "Let's pee in the corner" (that's me in the corner) on the REM song "Losing My Religion." It is misheard, misrepeated information. Another example is people repeatedly using the word "irregardless" which is not a word, however, "irrespective" is. With enough common misuse, it seems to be the norm. But is there more to this than we though...