0_Apprentice
twins are such an interesting subject!what can you tell me about them
1_Wizard
Well, they are two offspring produced by the same pregancy - kinda like a 2 for 1 sale!
0_Apprentice
yeah! what type of twins are there?
1_Wizard
Well, you can have identical which means the egg splits, or you can have fraternal where there are two separate eggs.  
0_Apprentice
ohh interesting. what else can you tell me about twins?
1_Wizard
There are actually people in the world that are non-related look alikes - they are called doppelgangers.  There  have been several movies and tv shows that involve a set of dopplegangers like Vampire Diaries.
0_Apprentice
ive always wanted to find my doppleganger and hang out for one day lol! what else can you tell me