Aristophanes, for instance, mockingly alludes to the practice, claiming, "Most citizens are ('wide-arsed') now." The terms , , and were used by Greek residents to categorize men who chronically practiced passive anal intercourse. Pederastic practices in ancient Greece (sexual activity between men and adolescent boys), at least in Athens and Sparta, were expected to avoid penetrative sex of any kind. Greek artwork of sexual interaction between men and boys usually depicted fondling or intercrural sex, which was not condemned for violating or feminizing boys, while male-male anal intercourse was usually depicted between males of the same age-group. Intercrural sex was not considered penetrative and two males engaging in it was considered a "clean" act. Some sources explicitly state that anal sex between men and boys was criticized as shameful and seen as a form of hubris. Evidence suggests, however, that the younger partner in pederastic relationships (i.e., the ) did engage in receptive anal intercourse so long as no one accused him of being 'feminine'. In later Roman-era Greek poetry, anal sex became a common literary convention, represented as taking place with "eligible" youths: those who had attained the proper age but had not yet become adults. Seducing those not of proper age (for example, non-adolescent children) into the practice was considered very shameful for the adult, and having such relations with a male who was no longer adolescent was considered more shameful for the young male than for the one mounting him. Greek courtesans, or hetaerae, are said to have frequently practiced male-female anal intercourse as a means of preventing pregnancy. A male citizen taking the passive (or receptive) role in anal intercourse ( in Latin) was condemned in Rome as an act of ('immodesty' or 'unchastity'); free men, however, could take the active role with a young male slave, known as a or . The latter was allowed because anal intercourse was considered equivalent to vaginal intercourse in this way; men were said to "take it like a woman" ( 'to undergo womanly things') when they were anally penetrated, but when a man performed anal sex on a woman, she was thought of as playing the boy's role. Likewise, women were believed to only be capable of anal sex or other sex acts with women if they possessed an exceptionally large clitoris or a dildo. The passive partner in any of these cases was always considered a woman