Wag the Dog:
A diversion away from something of greater importance.
Water Under The Bridge:
Anything from the past that isn’t significant or important anymore.
Wear Your Heart On Your Sleeve:
To openly and freely express your emotions.
When It Rains, It Pours:
Since it rarely rains, when it does it will be a huge storm.
When Pigs Fly:
Something that will never ever happen.
Wild and Woolly:
Uncultured and without laws.
Wine and Dine:
When somebody is treated to an expensive meal.
Without A Doubt: