"at the drop of a hat"
immediately or suddenly without needing an excuse or reason
Related words and phrases:
Two colleagues are talking ...
Colleague 1: What's with that big red folder you are always updating?
Colleague 2: That folder contains all the most pertinent data on our top customers. You never know when you could be suddenly called with an issue with a customer and I like to be prepared.
Colleague 1: So you are ready to go at the drop of a hat?
Colleague 2: A customer calls with a problem. I grab the folder and I have everything I need to take care of the customer.
Two friends are talking ...
Friend 1: I don't know what is going on with my wife. One minute she is laughing and then at the drop of a hat, she's angry and upset.
Friend 2: Does something happen which causes her to cry? Do you provoke her in some way?
Friend 1: No. I don't say anything and nothing happens. She just gets angry for no discernible reason.
Friend 2: Sounds like hormones. Maybe she is pregnant.
There is no gerund form for at the drop of a hat.
1) ... and being available for me whenever I wanted -- at the drop of a hat, he would shun everything and come running the moment ...
2) ... has a habit of changing your warehouse on you at the drop of a hat. You can start the year with one warehouse (for standard items) and ...
3) ... who will go into attack mode at the drop of a hat.
4) ... how can you not love someone who makes you laugh at the drop of a hat?
5) ... has trouble following a conversation, falls asleep at the drop of a hat, has serious reaction time issues and yet he is still driving.
6) Many other schools will call out police officers at the drop of a hat. In the classrooms of America today, if you burp in class, ...
7) ... he sees someone dealing drugs, he'll call 911 at the drop of a hat.
8) Do you think Israelis like to go to war at the drop of a hat, out of sheer bloody mindedness? What an idiotic argument.
9) ... to be soberly and carefully considered and not entered into at the drop of a hat.
10) ... your employment in an economy where workers can be fired at the drop of a hat.
11) ... happy, well-fed, and fulfilled people don't riot at the drop of a hat. Only in places with a nearly bottomless well of disaffection and anger can a ...
12) I just could not perform at the drop of a hat, which is how I still think of class participation.
13) ... is an actress so I'm sure she can cry at the drop of a hat.
14) His sister explodes at the drop of a hat. The discussion won't even involve her and she will end up screaming, ...
15) ... no tenure in the job. You could lose it at the drop of a hat.
16) They will, however, at the drop of a hat, fire anyone who challenges their ideas and actions.
17) ... a real fear of not having the answers ready at the drop of a hat, especially in front of the customer.
18) His mood can go from good to raging mad at the drop of a hat. And he has no higher authority I can complain to when I'm harassed.
19) He can't just make up information at the drop of a hat, at least without exposing himself potentially to libel thus being sued for it.
20) I can tell a story at the drop of a hat. It takes hard work to write a novel.