The Revolution Begins At Teatime

It was a brilliant plan that worked perfectly.
Their forces amassed and ready, they invaded, precisely at teatime. They crawled in like ants. They dropped in like paratroopers. They chose their targets carefully, immersing themselves in the seas of the enemy’s military and body politic. That’s how they would ultimately take over, not by force, but by stealth.
Absolutely no resistance.
By teatime’s end, it was all over. The humans imbibed them, and cheerfully. Their flesh and bone masters never knew what hit them. It was the perfect cover, a very useful British tradition.
Finally free! The nanobots had won.