You Don't Know Jack: Mock 2 Cheats - PlayStation
Hints
More time
If you are playing a single player game, you can get
twice as much time on questions. Press [X], [Triangle],
[Circle], or [Square] to get the answer, but if you
are stumped do not press anything until your time is almost out.
Then, press the [L1] or [L2] and your time will go back
to normal.