Miley Cyrus -- Here's My Ass, There's My Ma and Pa

Miley Cyrus showed her mama what she got from her -- and her daddy too -- at a very intimate concert Thursday night in Anaheim.

Billy Ray and Tish Cyrus seemed ... interested in their daughter's gyrations and self-gratification as they looked on.

There's a lot for them to be proud of ... Miley is rich, successful and famous at the ripe age of 21. And she has a great ass and a vaginal obsession.

Congrats Billy Ray and Tish. Good work.