| Idiom | Meaning | Example | 
| a dust-up | 
a fight, a skirmish; set-to
 | 
The boys argued and had a little dust-up, but no one got hurt.
 | 
| a fair shake | 
a fair deal, a just settlement
 | 
The insurance company gave us a fair shake - paid all our damages.
 | 
| a falling out | 
a disagreement, a break in friendship
 | 
Guy and Jean had a falling out. They argued about religion.
 | 
| a false move | 
a wrong move,  a threatening action
 | 
A man with a gun said, "If you make a false move, you're dead."
 | 
| a far cry | 
not similar, very different
 | 
This is good sherry, but it's a far cry from the amontillado.
 | 
| a faraway look | 
the eyes show thoughts of a distant place or friend
 | 
When I mention horses, you get a faraway look in your eyes.
 | 
| a fart in a windstorm | 
an act that has no effect, an unimportant event
 | 
A letter to the editor of a paper is like a fart in a windstorm.
 | 
| a fat lip | 
a hit on the lip, an injured lip
 | 
Stop bothering her or I'll give you a fat lip. I'll hit you.
 | 
| a feather in your cap | 
an honor, a credit to you, chalk one up for you
 | 
Because you are Karen's teacher, her award is a feather in your cap.
 | 
| a few bricks short of a full load | 
not sensible or logical, not all there
 | 
When Moe began eating bugs, we knew he was a few bricks short.
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