Oh dear. We admit that sometimes when we really get into playing a first person shooter the immersion of the gameplay experience can take us out of reality for a bit. However we quickly snap back when something intrudes such as a cat who wants to walk on your keyboard all of a sudden or a wife who wants you to clean up the bathroom or something else that's mundane.
But be glad you don't have this guy's condition in the above YouTube video. Sure it's supposed to be for laughs and giggles. However haven't you worried about having something like this happen to you? Hey, at least this fictional character will get some employment for his disease.