My nephew, aged 7

In my case, it was 40 years and 1 month the first time.

well, had that before, but it was a once off and caught it before things went bad

storytime: One day, early at work, I'm on the computer to run something quick, the only other guy there, is trotting by me saying "not a fart, not a fart, not a fart". caught a glimpse of a wet spot (haha), he cleaned up, went home. Of course he had to tell his wife what happened.