Similar to a double-click, a Jack-click is the act of clicking any item on a computer, such as an icon or link, 3 or more times. This is usually done out of impatience for something to load, but can also be used in a useful way.
Q: Why is my excel loading incorrectly and freezing?
A: It appears that you jack-clicked it.
Q: How can I easily highlight the entire Web address?
A: Jack-click it.