Andatoin cozza (Literally "
gone taking mussels") is an italian slang term used to indicate a really
tired individual, so
tired that he/she isn't able to react immediately to questions and events.
(Italian) Frank deve aver lavorato duro! guardalo ora, è proprio andato in
cozza.
(English) Frank is really must have worked
hard today! Look, he is really
gone taking mussels now.