While things started the usual way, with singing in the car...
...it quickly escalated.
Then the pair hit up the McDonald's drive-thru (and made sure to get one of the limited-edition cups with Selena's lyrics on it).
When talk turned to Selena's BFF Taylor Swift, James brought up the point that their ~squad~ was a little sexist to include no male members. But of course, Selena had an answer for that.
Then they sang "Shake It Off", with dance moves on point.
