Johnny-on-the-spot
(redirected from Johnny On the Spot)Also found in: Acronyms.
Johnny-on-the-spot
One who is available and ready for action. Thankfully, Pat was Johnny-on-the-spot with buckets when the roof started leaking.
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]