The Latin verb for "to penetrate anally, bugger" is "pedicare". The object was usually but not always male. "Pedicare" was a blunt and non-euphemistic word, and can be used in a threatening manner, as notoriously by Catullus in "Carmen" 16, or in general to mean "fuck you". The etymology of "pedicare" is unclear, but some have thought it derived from Greek "paidika", having to do with pederasty. The basic word for "anus" was "culus". Common metaphors are "ficus", "fig", and "anus", "ring," which was considered a decorous term and was standard in medical texts.