Ok, my attempt for the biggest "getting away with it" - wait for it (can I get a drum roll?).....
32mph in a 30 zone. I kid you not.
Flashy blue lights, pulled over. Do you know what the speed limit is here sir? Umm, 30? And how fast were you going? Umm, 30? You were caught at 32mph sir.
Very, very nearly burst out laughing but thankfully thought better of it and did a slightly over the top & almost sarcastic "oh I'm very sorry, god what a terror of the roads I am, please don't lock me up and throw away the key, please". Got let off with a "be a bit more careful in future".