Is there anything called Dual Personallity

ya........... i do believe in dual personality. my hubby is one of them u know.... :-) :-) sometimes he seems to be very serious and on the other hand he's like- "ding...ding....ding....ding" :-)

There is an actual disorder called Multiple Personality. Basically a person has two or more distinct personalities and often they are not even aware of the the other personality. Traumatic events in their child hood are usually the cause, the mind seeks to protect itself so it creates another person to deal with it. This is a simplistic answer for it but hopefully it helps. If you want to read or view more on it I would recommend the book and movie of "Sybil". It's a true story of a woman who had sixteen differenent personalities, both male and female and ranging in ages from babies to old women.