Question about some parts of this YouTube video (Adele)

I need to translate this video, but there are some parts I don’t understand.

What does it mean “This isn’t a piss-take” at 5:36 in this video?
https://www.youtube.com/watch?v=Nck6BZga7TQ

Does it mean she is genuine when she says she was a fan of the Spice Girls?

(Sorry for the strong language)

Also, what did Adele say at 3:03?
It sounds like: “someone I haven’t met before Christmas, so I met out with him _ _ Christmas present.”