Whenever I find some really funny video on youtube, I normally share it on Facebook. And many of my friends on Facebook do the same. One annoying thing is that Youtube videos on Facebook doesn’t include an option to view in fullscreen. I often click twice and go to youtube page of the video to view in full screen.
If you are a Google Chrome user, I have good news for you. Facebook Full Screen Video chrome extension adds that little icon to view youtube video in full screen
I tried searching for similar add on for Firefox and failed to find any. Don’t be disappointed, I found a Greasemonkey script to do the same on Firefox.
Install the extension and remove the annoyance!