John·ny–on–the–spot noun \ˈjä-nē-ˌȯn-thə-ˈspät, -ˌän-\
: a person who is on hand and ready to perform a service or respond to an emergency
First Known Use of JOHNNY-ON-THE-SPOT
Seen & Heard
What made you want to look up Johnny-on-the-spot? Please tell us where you read or heard it (including the quote, if possible).