Góa khòaⁿ--tio̍h góa tiō chai-iáⁿ

Góa khòaⁿ--tio̍h góa tiō chai-iáⁿ (Eng-gí: I know it when I see it) sī chi̍t kù leh piáu-hiān kóng-ōe ê lâng siūⁿ beh kā chi̍t kóa thang koan-chhat ê sū-si̍t ia̍h sū-kiāⁿ pun-kui-lūi, chóng--sī hia-ê hun-lūi sī chiâⁿ chú-koan ia̍h sī bô chheng-chhó thang tēng-gī ê sèng-chit. Chit kù ōe sī 1964 nî Bí-kok Chòe-ko Hoat-koaⁿ Potter Stewart tī Jacobellis v. Ohio àn-kiāⁿ tang-tiong ê tîn-su̍t, leh kái-soeh chóaⁿ-iūⁿ àn-kiāⁿ lāi-bīn ê châi-liâu chiàu Roth chhì-giām bô thang sǹg siâ-îm-mi̍h (obscene).