Ok, so let me see if I've got this right. Not only are the three of you siblings who supposedly use the same exact computer and type in the same exact style, but now you expect us to believe that you switched between three people in under 2 minutes AND that your "siblings" found it so important to rush like that to say "indeed" and "yups~"
No, no you just didn't even try with this one. You are a samefag and you and your siblings will all be considered one person.
Even if you WERE three different people, the excuse "don't blame me, it was my brother/sister that said it" or you "agreeing with your sibling's statement" will NOT fly. Someone will call you on it EVERY time, I guarantee.