For those too young to remember here's an account:
The Russians and Chinese were glaring at each other across a river that marked their disputed border. The Chinese brought in reinforcements - a massive deployment - and marched right up to the shoreline.
The world waited. Would they push on, dig in? Not quite. The Chinese officers lined their men up along the riverbank in single file, ordered them to turn around, bend over and ... drop their trousers.
I kid you not. This was the ultimate definition of the term 'shock troops.'
The Russians were beside themselves, riffling through their army manuals. Where's the chapter on countermeasures? Where's the entry under bum?
Chaos ensued. The Russian economy came close to collapse. How can you work with all those bums pointing at you day and night? For indeed it was a day and night operation. When cramp set in, reserves were called up, new bums for old. And with a population of 1.2 billion there was indeed a lot of Chinese cheek to spare.
The West watched in horror - from a distance. What if it escalated? What if the Soviets retaliated? They'd already put their formidable - and frighteningly vast - women's shot put team on standby. The Press sisters were coming out of retirement. And the Warsaw Pact was handing out extra steroids to East Germany's even more cellulite-enhanced putters of shot.
The Chinese weren't sitting down on the job either. Secret negotiations were underway with their former enemies across the sea - the Japanese. Do I have to say the word Sumo?
The Security Council met behind closed doors. The CIA handed out aerial photos of Sumo wrestlers' backsides to stunned delegates. Extra large photographic paper had to be commissioned. The World was teetering on the brink of all out mooning.
And then, and this shows why today's leaders are minnows compared to the giants of yesteryear, the Russians came up with the ultimate countermeasure. And look - no bombs, no threats, no meaningless sanctions - they covered the northern bank of the disputed river border with posters of the Chinese Premier, Chairman Mao. Across the river, trousers were hoisted in an instant. Buttocks were covered, the troops stood down and Sumo wrestlers threw their salt back into their buckets.
The world had stared into a mighty crack of an abyss ... and stepped back.