It's a party on SNL!

Although Saturday Night Live has savagely mocked her over the years, Miley Cyrus is all set to guest-host the hallowed sketch comedy this week.

In this promo, Cyrus, 18, hangs out with -- and pranks -- SNL cast member Keenan Thompson in a recording studio.

Check out Cyrus' unbelievable sound-effects skill and more in this hilarious clip.