Kǎtōng rénwù chángcháng bèi huà chéng bāoyá de yàngzi.
Cartoon characters are often drawn with buckteeth.
Tips
culture
龅牙 is a stock visual gag in Chinese cartoons and comedy - the most famous example being 龅牙兔 ('Buckteeth Bunny,' a once-popular brand mascot). Calling someone 龅牙 directly is rude; describing the trait neutrally (有龅牙) is fine.
memory
龅 (bāo) is an obscure character used essentially only in this word. It contains 齿 (tooth) on the left - a clue to the meaning. 牙 also means tooth, so 龅牙 is 'protruding tooth + tooth.' Doctors/orthodontists also call this 牙列前突 (yáliè qiántū).
