As a lover of puns, I have to grudgingly admit that that's pretty good.
It's impossible to overstate the importance of a snappy, simple slogan or catchphrase. I sometimes wonder if Leave would have won the vote even without Cambridge Analytica, lies about Turkey and all the rest, purely on the strength of Cummings's "Let's Take Back Control". Brutally simple. Direct. Emotive. Implies that we are currently *not* 'in control', whatever that means. Invites anyone who disagrees to explain who, if not 'we', should be in control, and why. "Make America Great Again" is another. What sort of American would want their country to be *not* great - small, poor, meek, cowardly, whatever the opposite of 'great' is?
Corbyn's "For the many, not for the few" is pretty good too, although even seven words might be a bit too long.