Best one I heard about was two military helicopters with two pilots in each, flying from one military base to another.
On the Area Flight Service frequency one of the helicopters went onto 'constant transmit' with one of the pilots tellng the bloke he was with how he fu*ked the CO's wife the day before. Unfortunately for him the pilot in the helicopter next to him on the same Area Flight Service frequency was the CO.
Not only had he told the whole world what a good time he had with the CO's wife, but told the CO as well.
I heard there was a pretty good punch up when they both landed!