The Wrecking Ball hitmaker took her Bangerz tour to Montreal on Saturday (29Mar14) and Toronto on Monday (31Mar14), and managed to take some time out of her busy schedule to fool around with Lavigne.
In a short video posted on Instagram.com, Cyrus is caught reading a magazine with a hand-drawn, mocked up cover declaring Lavigne as the "Most famous, beautiful and popular in Canada".
Cyrus declares, "Erm, I'm in f**king Canada", before the Sk8er Boi star walks in and sets her straight, saying, "I'm actually, like, the most famous person in Canada."
Cyrus, wearing a Rastafarian-striped onesie, retaliates by stating, "I may not actually be Canadian, but I'm the most famous person in Canada, you dumb f**kin' b**ch!". The bizarre clip ends with the pair pretending to attack each other, with subsequent photos posted by Lavigne showing them wrestling on the ground and then hugging.
The caption for one of the latter photos simply read, "April fools".