put a bomb under

put a bomb under (someone or something)

To motivate or give someone an incentive to do something faster, better, or with greater energy or enthusiasm. Primarily heard in UK. It's been over a week now and we still haven't gotten our delivery! I think it's time you called customer support and put a bomb under them. Here's hoping the new manager will put a bomb under his squad, because they've been looking like amateurs the past few games.
See also: bomb, put
Farlex Dictionary of Idioms.

put a bomb under

1 take drastic steps to rouse (an inactive or dilatory person) to action. 2 have a profound or radical effect on (something, especially something that has been accepted or unchanged for a long time). informal
2 2003 John Ray Dissecting Leftism In my academic posting of May 16th about psychopathy, I report findings that should put a bomb under a major field of psychological research.
See also: bomb, put
Farlex Partner Idioms Dictionary
See also:
  • put a bomb under (someone or something)
  • put a bomb under something
  • put a rocket under (someone or something)
  • use (something) as a carrot
  • use something as a carrot
  • start a fire under (someone or something)
  • build a fire under (someone or something)
  • light a fire under
  • light a fire under (someone or something)
  • light a fire under someone