Many years ago, during a boat-spotting Ocean Safari MRR bore-ex, 'Valerie' the AEO starts sending his routine 'Disport' broadcast...
"All Stations, all stations, this is XXXXX, Disport opens...." followed by several minutes of positions and boat track directions. On and on he droned, followed finally by ".....Disport ends...OUT".
Quick as a flash comes the reply "XXXXX, this is Midland Radar - I guess that wasn't for us then?"
Not the sharpest tool in the box was Valerie (he managed to cartridge start the AAPP on the ground with the Crew Chief underneath the wing....twice!", but from then on he always checked which radio he'd selected rather more carefully...