Reminds me of when one of ours was in K, reading chapter books fluently (that was also the summer of TinTin)...and was very eager to teach age peer friends to read. DC would sit with the other little 5-year-olds and help them sound out their Bob books. I love that none of them seem to have viewed the range of skills as anything remarkable.

...pronounced like the long vowel and first letter of the alphabet...