We've all experienced that desperate need to relieve oneself when there's no bathroom in sight.

Now scientists have discovered there's an advantage to that urgent feeling.

Needing to pee can make you a better liar. Credit:DirecTV

In a small study researchers from California State University showed that the self control needed to suppress the urge to urinate can make you more convincing at telling lies.

This effect is known as inhibitory spillover effect (yes, really). It's thought that exercising self control in one task can have a "spillover effect" and influence your self control in another task.