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1.
Amazing, miraculous human beings. They come from the splitting of a fertilised egg, and look exactly the same. They have the same DNA, so one could commit a crime and frame the other one. (Although this never happens because identical twins are loving, friendly, law-abiding people).
Do not confuse with Non-Twins.
"Wow look at those two, they look exactly the same! They're helping that old lady cross the road, how kind!"
"Yeah they're identical twins, aren't they amazing?"
by Charbot November 10, 2004
 
2.
identical twin girls(most twins not all, this incudes guys too) are the most loving, spiritual, smart, hot, and caring people you will ever meet. Being a twin is awesome and very lucky because they are definetely a dream bestfriend. Not the typical back stabbing, hypocritical, and turns out to be mean bestfriend all the girls dream of never encountering. As a twin, you think the same and can say the same exact thing at the same exact time(AWESOME!) Also, for all those who talk shit and stereotype twins as bitches and bullies you really have not met twins before because whoever has met twins can tell you so and if you haven't met twins yet, its very cool.
Guy; Hi! Are you girls twins?
identical Twins(at the same time): Yea, identical
Guy: Awesome!
 
4.
Two or more people that are exactly the same and/or copy off of one another.
Wow! Lady Gaga and Roisin Murphy are Identical Twins!
by AllTruths February 22, 2010