Zhang is butt of jokes after revealing all

Those of you who have not seen Zhang Ziyi's bikini pictures, be warned.

They appear to show her billionaire boyfriend Vivi Nevo examining her butt crack in excruciating detail on a beach in the Caribbean. The jpegs are not for the squeamish, but that didn't stop China's netizens from taking a peak en masse and causing many of the hosting websites to crash.

Predictably, Zhang's assistant was on the warpath Monday and threatened to sue the sites' owners.