1. Open the Run Application dialog (Alt + F2)
2. Enter "free the fish" (without the quotes)
3. Press Enter
Another way to invoke it:
1. Right-click your Gnome panel
2. Click About Panels
3. Press the "F" key three times
(To turn off this easter egg, pressed ALT+F2 then typed “pkill gnome-panel”)
And another easter egg (Gegls From Outer Space) :
1. Open the Run Application dialog (Alt + F2)
2. Enter "gegls from outer space" (without the quotes)
3. Press Enter
