at the drop of a hat [exp]

Meaning:

• To do something without any pause which stems form not being sure.

Examples:

1. I will accept this job at the drop of a hat, because this is the exact thing that I was waiting for up until now.
2. The athlete is ready to compete at the drop of a hat if called upon.
3. Her parents would babysit her kids at the drop of a hat whenever needed.
4. They packed their bags and left for a weekend getaway at the drop of a hat.
5. The IT team fixes issues at the drop of a hat to avoid downtime.
6. He’s the kind of friend who would come over to help at the drop of a hat.
7. She’s always ready to help her friends at the drop of a hat.