put a rocket under (someone or something)

put a rocket 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 rocket under them. Here's hoping the new manager will put a rocket under his squad, because they've been looking like amateurs the past few games.
See also: put, rocket
Farlex Dictionary of Idioms.
See also:
  • put a bomb under
  • put a bomb under (someone or something)
  • put a bomb under 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