With a number of updates released to Google+ yesterday, Google+ site now supports GIFs for your user profile photos. The GIFs work on both your desktop and mobile version of Google+ with some limitations (appear as still images next to user’s post) So don’t think you started seeing things when your friend’s user profile ‘winks’ at you.
Our gif to you. You can now use animated gifs for your profile photo. Never made one before? Let us help you get started: http://goo.gl/YmGwI