Video - First contacts are messy
By the way, is your mum an alien?
First contact is the first meeting of two cultures previously unaware of one another. Or planets. Planets, cultures... it's all the same. You can safely use either of them in conversations as the same word, almost without serious consequences.
By the way, is your mum an alien? Because she's out of this world, if you know what I mean.
Anyway, this is not the kind of first contact the following video is about.
The mum thing. The other one? Yes.