Disabled right mouse button garbage is easy to get past.
Just press 'ESC' at the same time you right click and 'presto!' the context menu appears.
"Save Picture as..." here I come.
Also, far too many of the right mouse button-disabling scripts don't quite work right in Mozilla, I've noticed. They let the context menu display, and THEN pop up a dialogue box with the menu still usable. Oops.