Idiom (Letter F)

Feeding Frenzy:
An aggressive attack on someone by a group.

Field Day:
An enjoyable day or circumstance.

Finding Your Feet:
To become more comfortable in whatever you are doing.

Finger lickin' good:
A very tasty food or meal.

Fixed In Your Ways:
Not willing or wanting to change from your normal way of doing something.

Flash In The Pan:
Something that shows potential or looks promising in the beginning but fails to deliver anything in the end.

Flea Market:
A swap meet. A place where people gather to buy and sell inexpensive goods.

Flesh and Blood:
This idiom can mean living material of which people are made of, or it can refer to someone's family.

Flip The Bird:
To raise your middle finger at someone.

Foam at the Mouth:
To be enraged and show it.

Fools' Gold:
Iron pyrites, a worthless rock that resembles real gold.

French Kiss:
An open mouth kiss where tongues touch.

From Rags To Riches:
To go from being very poor to being very wealthy.

Fuddy-duddy:
An old-fashioned and foolish type of person.

Full Monty:
This idiom can mean either, "the whole thing" or "completely nude".

Funny Farm:
A mental institutional facility.