Crossing the road
I watched an articulated lorry drive the wrong way down a dual carriageway today, upon realizing his error attempt a U-turn by some traffic lights. The lights turned red whilst the lorry was only half way through the maneuver. Jack-kniffed at 90 degrees, and blocking all traffic, it sat there as I crossed the road and cars and bikes tried to make their way through tiny gaps. It will probably took at least another 20 minutes for the resulting traffic jam to clear enough for it to leave.
At the airport
A man just pressed his finger against his right nostril, aimed his nose at the floor, and blew his nose with all his might. The snot flew out and smacked against the pristine airport floor.