Johnny-on-the-spot

(American informal)

someone who is immediately ready to do something, especially to help someone This guy had just gotten a flat tire, and there I was, Johnny-on-the-spot with my tools in the back of the car.

Johnny-on-the-spot

A person who is available when needed, as in He always is there at the right time, a real Johnny-on-the-spot. [Late 1800s]

Common Names:

Name	Pronounced	Usage
Pollie	PAHL-ee	English
Eurwen	-	Welsh
Kelleigh	KEL-ee	English (Rare)
Steffie	-	German (Rare)
Earline	URL-een	English
Jadran	-	Croatian, Serbian, Slovene