名詞
讀書成績好好嘅學生（量詞：個） students who have good grades
唔好以為佢成日上堂瞓覺成績就好差，其實佢學霸嚟。
唔好以为佢成日上堂瞓觉成绩就好差，其实佢学霸嚟。
m4 hou2 ji5 wai4 keoi5 seng4 jat6 soeng5 tong4 fan3 gaau3 sing4 zik1 zau6 hou2 caa1, kei4 sat6 keoi5 hok6 baa3 lai4. Don't assume he has bad grades just because he is always sleeping in class. He actually gets high marks.
Definitions (Wiktionary)
noun, neologism, slang
studyholic; brainiac; top student; straight-A student; high achiever; overachiever