Bottom line is, Pinterest apparently has been hacked.
Boards across the site have had their photos replaced with spam images of posteriors and women in lingerie. Many of them had captions about weight loss or promoting giveaways.
The Daily Mail reports:
Pinterest has been alerted to the problem and told MailOnline that it is investigating the issue.
While Pinterest aren't actively taking the pins down, users can check their account and remove any offensive hacked pins.
Are you on Pinterest yet? It's great most of the time! Find out more about the pin board site here.