that's what the guys used to call me back when I was 5 years old in my go kart!
I was almost as big a terror in that thing as I was in my itty bitty motox bike.
Child safety was a different world entirely back in the 70's.
perfectlap is either the elusive mistake free lap where every apex is nailed and every exit speed maxed to the fullest. Some drive for decades without every accomplishing this. On some tracks like the N-Ring (the old one) Jackie Stewart said it was impossible.
its also the combination of your best sector times from different laps in qualifying.