We used the aft tranny on Chinooks for cooking our cans of C-Rations....but leaving one on too long without punching a wee hole in the top could be interesting.
Trundling along over a bad neighborhood near the Cambodia/Laos/Vietnam border....a very loud report issued from the rear of the aircraft. I immediately initiated a Chinook version of evasive action....usually begun with both pilots shrinking up to just boots and helmets while hiding behind a couple of very small pieces of armor plate....and inquired what damage we had and if anyone in the back had been hit.
Crewie hesitated a few seconds...confirmed no damage....and no one hurt....to be asked...in very cool, calm, measured tones...(translated....words rattling out like a modified machinegun....in a very high shrill pitch...) just what the heck was that?
The reply....as the crewie walked up to the cockpit licking his fingers...."Beans and Franks, I think, Sir!"