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Phrase(s): bow to the porcelain altar
Sl. to vomit, especially as a result of drinking too much alcohol. (The porcelain altar is a euphemism for a toilet bowl.) • He spent the whole night bowing to the porcelain altar. • I have the feeling that I will be bowing to the porcelain altar before morning.
McGrawhill's American Idioms And Phrasal Verbs