This will only mean something to those of us who watch British TV. In the UK, to receive TV and radio signals you require an annually renewable TV licence, a peculiar system used in Britain to fund the non-commercialised BBC. Not having a licence is an offence and you can be fined if found to be using a TV without one. Recently there has been a campaign to persuade people to renew over the Internet and it has the most annoying earworm as a jingle which goes through all the reasons people press buttons on various gadgets in modern life.
Generally speaking this brain washing by the BBC has partially achieved the desired effect on me because whenever this jingle come on I press a little button as quickly as I can, the MUTE button on the remote, but it has prompted me to adapt the jingle to this parody.
You press a little button to save your sanity,
You press a little button on the T V,
You press a little button to change the channel
Then you watch ITV