(from) coast to coast - from one side of a country to the other.

It was the first fully paved coast-to-coast US highway, between New York and San Francisco.

• the pick of something
• the picture of
• the picture of something
• the pink pound
• the plot thickens
• the plot thickens.
• the point of no return
• the pot calling the kettle black
• the power behind the throne
• the powers that be
• the primrose path
• the prodigal son
• the promised land
• the proof of the pudding .
• the proof of the pudding
• the proof of the pudding is in the eating
• the proof of the pudding is in the eating.
• the pros and cons
• the rank and file
• the real McCoy
• there and then
• There are no flies on .
• There are no flies on someone.
• There are plenty more where that came from.
• There are plenty more where they came from.