at the drop of a hat
idiomPart ofhat
at the drop of a hat — idiom
1. immediately and without any hesitation, no matter what the situation is.
1.idiom
Definition
immediately and without any hesitation, no matter what the situation is.
Example
Vinícius would help a neighbour fix a broken fence at the drop of a hat.
The band is ready to perform at the drop of a hat whenever they are called.