That's why, when you want to give someone the impression you're good at something, the best strategy is to tell them you practice often, but you're not very good. Intuitively people are aware of:
https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
(Although this strategy may not work with kids, who don't know anything yet )
THERE ARE ALWAYS KIDS WHO COME UP TO ME AND SAY THEY ARE REALLY GOOD AT CHESS BUT THEY THINK PAWNS CAN MOVE BACKWARDS, CASTLING IS ILLEGAL, AND EN PASSANT IS ILLEGAL. THEY BRING OUT THEIR ROOKS BY H4 AND A4 AND THEY SPEND 2 MINUTES ON EVERY MOVE INCLUDING THE FIRST MOVE.