This is such a weird meme. We (the British) has our arses kicked and had to flee on a bunch of fishing boats we cobbled together, leaving all our valuable shit on the beech while the French covered our retreat. It was only after we buggered off and left them that they surrendered.
Simple fact is our military was a bad joke at the time. If Hitler had carried on over the channel we would have quickly been defeated. It was only his mistake in assuming that a naval led invasion would have failed without first winning an air war. Even then we only won in the air due to large part to the poor shape of the German airforce which never really had much chance to begin with.
Don't get me wrong, there were a lot of brave men fighting at the time, but the reality is we were just as "bad" as the French, if not more so.