| Idiom | Meaning | Example | 
| follow me | 
understand what I am saying, understand my meaning, 
get my drift
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"Do you follow me?" "Yes, except for the idioms." 
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| follow the rules | 
read the rules and do what they say, toe the line
 | 
If everybody follows the rules, we'll have fewer accidents.
 | 
| follow through | 
do what you promise, see it through
 | 
If you promise to help, try to follow through.
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| food for thought | 
ideas worth considering, interesting suggestions
 | 
Your comments on Quebec have given me food for thought.
 | 
| fool and his money... | 
(See a fool and his money are soon parted)
 | 
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| fool around | 
play, play around, goof off, horse around
 | 
We don't fool around in her class. She's very strict.
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| fool around | 
have sex with someone who is not your spouse,  have an affair
 | 
Rita asked Jon for a divorce. She knows he's been fooling around.
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| fool you | 
trick you, deceive you
 | 
Paul was fooling you. He owns a Ford, not a Ferrari.
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| foot the bill | 
pay all of the expenses, pay the shot
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It's not right for Dad to foot the bill for your trip to Vegas.
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| footloose and fancy free | 
carefree, not committed, devil-may-care
 | 
When the kids moved out, we were footloose and fancy free!
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