a shit-eating grin

(American taboo)

a look of extreme satisfaction on someone's face that is annoying to other people who are less happy Ever since she heard they'd won she's been sitting there with that shit-eating grin on her face.

Common Names:

Name	Pronounced	Usage
Damijana	-	Slovene
Adamson	['ædəmsn]
Aristotle	AR-ə-stah-təl (English), ER-ə-stah-təl (English)	Ancient Greek (Anglicized)
Kaito	kah-ee-to	Japanese
Ashoka	-	Sanskrit
Caspian	KAS-pee-ən (English)	Literature