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.

Farlex Dictionary of Idioms.

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]

The American Heritage® Dictionary of Idioms by Christine Ammer.

Johnny-on-the-spot

A person who is present at a crucial time. This term comes from nineteenth-century America. An early appearance in print is in George Ade’s Artie (1896): “I could see that a Johnny-on-the-spot . . . was trying to keep cases on her.”

The Dictionary of Clichés by Christine Ammer

See also:

on one's
on someone's
out of one's
(I've) got to go
save someone's skin
(Have you) been OK?
#dead
other than
other than (something)
cat on a hot tin roof, like a

词组	Johnny-on-the-spot
释义	Johnny-on-the-spot 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. Farlex Dictionary of Idioms. 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] The American Heritage® Dictionary of Idioms by Christine Ammer. Johnny-on-the-spot A person who is present at a crucial time. This term comes from nineteenth-century America. An early appearance in print is in George Ade’s Artie (1896): “I could see that a Johnny-on-the-spot . . . was trying to keep cases on her.” The Dictionary of Clichés by Christine Ammer See also: on one's on someone's out of one's (I've) got to go save someone's skin (Have you) been OK? #dead other than other than (something) cat on a hot tin roof, like a
随便看	dive in dive into dive into (something) dive in with both feet dive off diver diverge diverge from diverge from (something) divert divert from divert (someone or something) from (someone or something) Dives divide divide and conquer divide and conquer/rule/govern, to divide and rule divide by divided divided against itself divided on divided on (someone or something) divide fifty-fifty dividend divide (something) by (something)