| Idiom | Meaning | Example | 
| for heaven's sake | 
for the sake of everyone, for goodness sake
 | 
For heaven's sake, don't give her a teapot. She has four!
 | 
| for kicks | 
for fun, for enjoyment
 | 
"What do you guys do for kicks?" "I play computer games."
 | 
| for laughs | 
for fun, for amusement
 | 
For laughs, we watch old movies.
 | 
| for long | 
for a long time, for many minutes or days
 | 
She wasn't in the water for very long - just a couple of minutes.
 | 
| for love nor money | 
not for any reason, never, no way
 | 
I won't skydive for love nor money. It's too dangerous.
 | 
| for openers | 
as a first activity, to begin
 | 
For openers, let's discuss the budget. It's very important.
 | 
| for Pete's sake | 
for the good of "Pete" and everybody, please
 | 
For Pete's sake, don't talk when your mouth is full of food!
 | 
| for sure | 
yes, certainly, no doubt
 | 
I'll pay you back tomorrow  for sure. I promise.
 | 
| for the birds | 
poor quality, crummy, the pits
 | 
It was a beautiful wedding, but the food was for the birds.
 | 
| for the fun of it | 
for fun, for a good time, for laughs
 | 
"Why did you take my bike?" "Just for the fun of it."
 |