Kinloss, late '80s.
My first love, the Nimrod, had those intercom/radio tx paddle switches. By flicking it across quickly, one could turn a radio transmission into merely an intercom one in mid-flow, without this being obvious to the rest of crew.
One dark and dirty night, a crew was coming home on a PAR at about 0200. The lead Nav was a guest, and happened to be the Sqn Nav Leader. His wife was an ATCO at Kinloss.
Female PAR Controller: "4nm - check gear"
Flt Lt pilot: "C/S three greens...(flicks paddle switch to intercom)...and any chance of a blowj*b?"
Growl from the back: "Flt Lt ****, my wife does not give blowj*bs"
Flt Lt pilot: "Bad luck, sir!"
Well, that's how I remember it...