Disadvantages
Some of the disadvantages of being a Siamese twin are that you have difficulties getting up, or joining sports. Its also difficult because sometimes its really hard to be around someone that is stuck to you twenty four seven.
Another disadvantage is that if you ever decide to get surgery for separation from your twin, one or the other of the twins could die from the operation. There was one case where two Siamese twins got surgery at about the age of 26 and a half hour later after the surgery was done one Siamese twin died, and one hour later the other Siamese twin died.