This seven-minute tale of a night out in the band's home city of Leicester is one of several of tracks on 48:13 inspired by the close, brotherly relationship between Kasabian songwriter and guitarist Serge Pizzorno and singer Tom Meighan. The latter told NME: "'Treat,' more than anything, is about looking in the mirror at your bad self. With me and Serge there's kind of a good side of us and an evil side of us. He's my evil twin and I'm his evil twin, it's true. It's the flip of a coin, two sides, two faces."
Pizzorno told the BBC: "There's a moment in 'Treat' where the track drops out just as we say Leicester which is, like, a proper move. Leicester is so important to us. We all still live there."
The song includes the lost-the-plot lyric "I'm stood here naked with a junky sinking margueritas."
Pizzorno told Q magazine: "That's about a friend of mine, that particular line. But y'know, we've all been in a moment when you've just gone."
The track blossoms into an extended, percolating synth coda. "I felt that song had a really futuristic sound, like future rock," Pizzorno told the BBC. "In my head, I was like, 'How do you end a song like that?' And obviously, psychedelic music has been a huge part of my life. And with modern psychedelia, what do you do? You go off into space. That's how you end that song."
Ben Kealey, Kasbian's touring keyboardist, plays the Wurlitzer electric piano on this track.