She couldn't resist. Singer Miley Cyrus smoked a joint on stage and twerked with a dwarf during the MTV EMAs on Sunday. The 20-year old pop star also took home the Best Video award for her hit song "Wrecking Ball" during a show with a strong lineup of other performers including Eminem and Katy Perry. Cyrus opened the space-themed show singing the song "We Can't Stop," while wearing a silver spandex suit and gyrating her buttocks in the move known as twerking in the general direction of her smaller female dance partner. To the delight of the crowd in Amsterdam's Ziggo Dome, Cyrus finished the number by sticking out her tongue, the same expression she flashed repeatedly during her eyebrow-raising appearance at MTV's Video Music Awards in New York in August.