Miley Cyrus is more trick than treat this Halloween ... at least judging by the photo of some very X-rated pumpkins she just posted on Twitter.
It's unclear if Miley carved the Jack-o'-lanterns herself -- but she's definitely proud of the 3 pumpkins, 2 of which contain images of people bangin' (one lesbian scene) and another gourd contains an image of a giant marijuana leaf.
And to tie the whole thing together, there's a sign that reads, "Happy F**king Halloween."
You stay classy, Miley.
whatever, post your pumpkins ONTD