Ariana Grande’s new single, “Side to Side,†is a veiled, bumping song about — well, bumping hard. She performed the song, off her new album, Dangerous Woman, on last night’s Tonight Show. Though Nicki Minaj, who is featured on the track, was absent, Grande did have The Roots backing her up — er, not like that. Grande was also Jimmy Fallon’s guest on the couch, where she regaled him with stories about recording with Stevie Wonder and took the Best Friends Challenge with him:
