There was of course the table sawing Oktoberfest at Wildenrath when somebody lost a finger.
Then there was the occasion at Gutersloh when somebody deflated the bouncy castle at a Summer Ball - unfortunately the airborne officer leaping off the Feuhrer Balkon hit the ground hard.
We also had the 'pod' chopping incident on exercise at Marham. A 'disillusioned' Chief was detailed for ex purposes to do something dramatic. He took an axe to a pod on a Victor and tried to chop it in half! SEngO went apoplectic - the Chief had had a u/s end of life pod fitted before the ex, but SEngO was the last to know!
With regards to bang seats - no V-force rear crew had them. The only time I was involved in a real Mayday I was sitting on a 'whoopee' cushion in a Victor. The last few hundred feet were the most worrying - as said above, you need a fair bit of height to get out of the back of a V aircraft (1500' rings a bell).