徐幼稚
[xú yòu zhì]
'Xu Yu Zhi', it may be composed of someone's surname (徐 Xu) plus 'Immature (幼稚)', pointing at somebody named Xu who acts in naive or childish ways on purpose sometimes as a sign of personality charm. Alternatively, the name could imply someone trying to be playful and humorous by calling themselves immature.