I had the air box cover off a 4 cylinder outboard yesterday, syncing the carburetor linkage, and just as I blipped the throttle a cicada flew by and got sucked down the throat of carb #2.
The motor immediately started running like crap, and I had to remove the carb and use hemostats to get the little bastard out of the reed cage.
Had I not been looking at the time, and saw the cicada get sucked in there......I would have been chasing that sudden issue for Lord knows how long.