eng:Registration Card for People with Disabilities; literally: white card
yue:好多人以為「白卡」係精神病先拎得，其實唔係㗎。 (hou2 do1 jan4 ji5 wai4 baak6 kaat1 hai6 zing1 san4 beng6 sin1 ling1 dak1, kei4 sat6 m4 hai6 gaa3.)
eng:Many people think that only people with mental disorders can apply for a "white card", but it is actually not the case.
eng:(pejorative) used to represent mental patients or people who are perceived to be mentally unstable
yue:白卡佬 (baak6 kaat1 lou2)
eng:mentally ill guy; crazy guy