Niall Horan and Miley Cyrus spent time together in the recording studio earlier this year.
So we're guessing the following footage is all in good fun... but we wonder whether Miley will receive it that way or not.
During a recent tour stop in Australia, Horan jokingly Twerked for a brief moment in front of fans, a move that was immediately followed by Harry Styles screaming out "WRECKING BALL" and the boy band members sharing a laugh.
Horan went on to thank fans in attendance for showing up that night and for supporting One Direction over the years. Watch now and decide if you think the young singers are slamming Cyrus or not: