I've never scared the crap out of a golfer who was making a driving range out of a grass strip (Wakonda Beach state airport on the Oregon coast).
I never, after starting the Citabria's engine in the parking area near midfield, (where he was hitting the golf balls) taxied past him motioning for him to get out of the way.
I never, after completing runup at the far end of the field, gunned the engine so that I would scare him. When he looked at the airplane (now in takeoff position, stopped, but pointing right at him), he gave me a confused look, and then resumed hitting golfballs.
I never applied takeoff power and just started rolling to scare him off the field. When he finally moved (running for his life, even though I could easily stop to avoid him), I never lifted off about 20' prior to where he dropped all of his golf clubs, balls, ball retreiver, and associated crap and started running.
And I never went back to see if he s#!t himself.
Another one...
I never jery (sp?) rigged the starter bendix (using the screwdriver from my pax's little brother's pickup truck took kit) of a PIECE-O-CRAP Arrow II to engage with the prop after unsuccessfully spinning the starter (but not prop) at a podunk northern california field 100nm from the nearest A&P.
After that, I never took off over gross, using a nearby highway as an "overrun -- accelerate to climb speed" clearing. But, I really never want to fly a normally aspirated Arrow again (that one is true).
...I've never done aerobatics without parachutes.
...I've never acknowleged ATC's instructions to go around (landing traffic rolling out, when I am on 2+ mile final), only to slow to 1.2 * Vso, and put-put my way closer until the traffic was clear, only to never ask ATC once again to land.... and then of course, ATC never sounded embarrassed clearing me to land. This never happed many times over the course of several months with the same controller.
...I've never landed (well, I wasn't PIC!!!) with another pilot at a closed airport.... which was in perfectly good condition, not marked closed on the sectional, and had some really faint yellow X's painted over the numbers. No, I'd never do that.