People on Merseyside who grew up listening to radio will likely have an unshakable advert or jingle still lodged in their heads from decades before.
An 'earworm', or sometimes 'brainworm', is a catchy piece of music, or saying, that occupies a person's mind long after first hearing it. No doubt, the advert jingles we heard on radio growing up would qualify as they still claim a place in our collective psyches many years later.
Growing up in Merseyside, one of the main suppliers of unshakably 'sticky' earworm jingles was Radio City. Launched in 1974, it became the main commercial radio station in the region, making much of its revenue through advertising unlike the BBC funded Radio Merseyside.