Profile Question

Ever since May when I started my blog's profile, I have had the same silly question there. So now I have decided to change it to another randomly chosen question, but to prevent it from going into oblivion I'll write the old question and my answer here. From time to time I'll ask for a new random question and post the outgoing question here.

You've got to make contact with the alien leader. How will you tell when the conversation is finished?

When limbs start flying.