xiǎo​zixiǎo​zǐ

fellow

小子 xiǎo​zi frequency
fellow noun
derogatory or informal term for a man, often implying a rascal or joker

You rascal! How dare you play such a joke on me!

boy noun
informal term for a boy or young male

That boy in red looks quite robust and spirited.

小子 xiǎo​zǐ
youngster noun
a boy or young man, often used as a term of address or reference for a junior by someone of the older generation

That kid really looks like his father.

I (humble) noun
a humble first-person pronoun used in archaic Chinese when speaking to one's elders or superiors

I have learned a lot; thank you for your guidance, elder.

Frequency

Movie subtitles
143.6 per million appears in 31% of films
Written text
26.8 per million

Sources

Definitions
CC-CEDICT