Get Out Of Firefox Full Screen n00b moment.

Just had a serious n00b moment. Surfing the net in the dark, hit the wrong key and Firefox went into full screen mode. Hit a bunch more keys to try and get out of full screen mode and nothing worked. Continued on like this for about 5 minutes, then decided to do a search.

Did a quick google search and discovered that hitting F11 will get you out of full screen mode in Firefox. NOW DON'T I FEEL STUPID. However, I was happy to discover that I wasn't the only one. https://support.mozilla.org/en-US/questions/959183

Doing this will get you out of full screen mode. Took me about 5 minutes of hiting keys, and a google search to discover what I was doing wrong. n00b moment !