Assertion: butt's shape | /r/CapableOf | echo the sci-fi look of the times
Facets:
Source sentences:
text: In the 1950s the preferred shape was pointy, echoing the sci-fi look of the times; in the 1960s it was elegantly sloped in alignment with Hippie chic of the times; and from the 1990s a buffed, pumped and engorged look has become the preference.