Post Malone emerged from a porta-potty on a recent Wednesday afternoon to meet his new Nashville public.

The face-tattooed pop chameleon had been cruising slowly across downtown, hidden on the back of an 18-wheeler that carried just a couple of speakers, some beers, two to-go toilets and a pair of superstars. As usual, Post — born Austin Post and known as one or the other, or the cuter variation, Posty — had brought a friend along as a local emissary.

So when the truck’s flatbed cover fell and the bathroom doors opened, revealing both him and the burly country hitmaker Luke Combs, everyone in sight — giddy children and grizzled grandfathers, wasted tourists and jaded locals — lost their minds as planned.

“Posty, we love you!” fans shouted from cars and skateboards amid a sea of raised cellphones. Professional cameras rolled, too, the herds thickening down Broadway as the truck eased past Nudie’s Honky Tonk, Jason Aldean’s Kitchen and the Whiskey River Saloon.

Like Nashville Pied Pipers, the once-unlikely duo were using the stunt to film a last-minute, lightly slapstick music video for Post’s new single featuring Combs, “Guy for That.”