The poet Ennius ("ca." 239–169 BC) declared that "exposing naked bodies among citizens is the beginning of public disgrace "(flagitium)"," a sentiment echoed by Cicero that again links the self-containment of the body with citizenship. Roman attitudes toward nudity differed from those of the Greeks, whose ideal of masculine excellence was expressed by the nude male body in art and in such real-life venues as athletic contests. The toga, by contrast, distinguished the body of the sexually privileged adult Roman male. Even when stripping down for exercises, Roman men kept their genitals and buttocks covered, an Italic custom shared also with the Etruscans, whose art mostly shows them wearing a loincloth, a skirt-like garment, or the earliest form of "shorts" for athletics. Romans who competed in the Olympic Games presumably followed the Greek custom of nudity, but athletic nudity at Rome has been dated variously, possibly as early as the introduction of Greek-style games in the 2nd century BC but perhaps not regularly till the time of Nero around 60 AD.