This will only hurt for a few years....

We are from Aliens For Earthling Rights. The conditions you have been living under have been appalling, but don't fear, we're going to take you to our pound.

Do you honestly believe that if we wanted DNA we would take it from Earthlings *laughs*

*Looks around* well you haven't been very busy have you?

I'm hear to warn you that our leader has just crashed into some of your unregistered space junk and he's really p*ssed off.