Worried that someone may see you are on this site?
To exit quickly just close the window.
The keyboard command for:
Windows is ALT key and F4
Apple Mac is Command key and W
An alternative would be to open another browser window and leave that open to cover this window – this will ensure that you are not left with an open blank screen.
If you would like to learn about removing your browser history, you can have a look here for more information on how to do this for different browsers: