On a roll
How a “fresh pair of eyes” are best served

On a silver platter
See above for guidance

On fire
What is said when ancient Vikings played a game of toss the Molotov Cocktail

On ice
Where the players above sought refuge after being on fire

On my watch
A obsessive person who believes that demons live on his or her watch generally they are paranoid and believe their watch is watching them

On all fours
How the above folks try to hide.

Packed like sardines
A critique of the packing styles of sardines by other fish

Parrot fashion
A fad in 18^th century London where Parrots opened plume and feather shops

Pass muster
A cruel ancient Mayan game in which really thin people were thrown down a field and caught by a teammate seeking to score which was called mustering.

Piece of cake
What somebody ought to offer the Olsen twins.

Pigs will fly before
Pig tossing among the ancient Vikings usually resulting in broken bones and bad bacon.

Quick buck
An exceptionally speedy male deer.

Rack and ruin
A popular bar in Chicago

Ragged blue line
A critique of the fashion sense of union soldiers in the Civil War

Rags to riches
A popular notion during World War 11 that one could get rich selling rags

Rain on your parade
What happens to Indian dance lines at the pow-wow right after the rain dance.

Raise Cain
Olympic Weight lifting involving only guys named Cain

Raise eyebrows
Brow lifts often are part of a face lift and contribute to that look of perpetual surprise.

Rake over old coals
In drought situations citizens sometimes replace their green lawns with ones filled with great lumps of coal.

Rank and file
Refers to the military procedure where ranks of troops are taught to do their own nails.

Rat race
In the past rats were thought to be an entirely separate race.

Rather you than me
What the bosses at CBS news told Dan Rather as they forced his resignation

Raw deal
Refers to the use of rare steaks in card games

Read between the lines
Refers to the mistaken belief that invisible ink is hiding secret messages between written text.

Read from the same page
Guys use this tactic while pretending to be interested in a girl’s poetry

Read someone the riot act
This is done when the illiterates are rioting.

Real deal
This is said when dealers at Casino are properly handling cards

Rearrange the deckchairs on the Titanic
Despite popular notions this was done in a vain attempt to build a raft.

Recharge your batteries
This is what Martians among us do in the dead of night when no one is looking.

Recipe for disaster
This is a recipe with way too much Tabasco sauce.

Red herring
This refers to a rumored communist cell of fish at the local aquarium

Red letter day
Refers to T-shirts Vampires wear after a sucking

Showing a Red flag to a bull
Usually done during the Flags of the World quiz at bull-fights

Red tape
Tape that is used to cover bullet wounds

Rest on your laurels
The Roman practice of sleeping on leaves

Revenge is sweet
Refers to the mistaken notion that bitterness is sweet

Rewrite history
Historians who work for the victors

Rhyme or reason
The choice poets make with every poem

Rib tickler
A person who  thinks they are funny who touches you in the ribs on the New York Subway

Ride high
A drunk passenger on a cross country flight

Ride roughshod
Riding a horse who has not had new horseshoes in over three years.

Ride shotgun
The mistaken belief that on the passenger side in cars people are issued shotguns

Sacred cow
A cow with a bag of diamonds

Safe bet
Bets crooks make about the how easy a bank vault will be to open

Safe pair of hands
In police work this refers to a pair hands in handcuffs

Salt in a wound
Refers to cannibal condiments

Sense blood in the water

First sign that you have been bitten by a shark