Brexit came about entirely by accident. The British are notoriously bad for skipping breakfast, the most important meal of the day. In order to remedy this, and to improve slumping weetabix sales, Brussels started a "Brekk-it" campaign to get people eating breakfast again.
This was a wildly successful campaign, and there were soon calls to make breakfast a lawful requirement. It was put to national referendum. Unfortunately, this caused mass confusion and hordes of people accidentally voted for the similar sounding 'Brexit', which was having a referendum the same day.
This caused outrage among cornflakes manufacturers, who became known as remoaners. The fools that voted in error were labelled as 'breakfasteers'.
The whole breakfast farce became so bad that gammon quickly became a pejorative term and the eating of backon was banned. This resulted even fewer people eating breakfast than before.
The French Shreddies Breakfast Company collapsed, and its staff made rednundant. Angry staff responded by forming the Exit Rebellion, and started to glue themselves to traints and the M25 in order to delay commuters and give them more time tomeat breakfast. Of course, the bjzarre French accent was misunderstood and the groups name accidentally translated into English as extinction rebellion.
So successful was their blockade that should Germany ever try to invade France again it will be Extinction Rebellion sent to halt their advamce, not the French army...who's troops refuse to fight until theyve had breakfast.