Emetophilia

Emetophilia is a paraphilia in which an individual is sexually aroused by vomiting or observing others vomit. Also referred to as a Vomit Fetish. Some emetophiles put emetophilia into practice by actually vomiting, especially on a partner. This practice is sometimes called a Roman shower, after the commonly-supposed (but mistaken) belief in the frequent induction of vomiting at Roman feasts.