“I’m all lost in the supermarket
I can no longer shop happily
I came in here for that special offer
A guaranteed personality”
meaning: “He lived his life like the commercials told him to, as in he followed all the trends thinking they had the answers (“I save coupons from packets of tea / I’ve got my giant hit discoteque album”). But when he wanted something substantial, personality, although modern culture promised it, it isn’t there, hence is lost in the supermarket of modern culture.”