已满18岁的骚年未满18岁的菇凉
[yĭ măn 18 suì de sāo nián wèi măn 18 suì de gū liáng]
This netname combines the playful description of 'an 18+ boy who hasn't quite grown up and an under-18 girl'. In Chinese slang, '骚年' means 'unruly but energetic teenager' and '菇凉' means 'a young lady or a lively teenage girl.' The netname portrays the idea of immaturity that persists in spite of reaching adulthood.