England captain Alastair Cook revealed a rallying cry from coach Trevor Bayliss preceded their stunning charge to a series-clinching victory in the third Test with South Africa.
A magnificent spell from Stuart Broad, which saw the paceman claim 5-1 in 31 deliveries, dramatically altered the course of a match that had been delicately poised after the opening session on day three.
South Africa took lunch on 16 without loss in their second innings, leading by six after England had posted 323 all out.
However, Broad's destructive blitz put England in total command and the Proteas were dismissed for a paltry 83 before England eased to a victory that secured an unassailable 2-0 lead ahead of the final Test in Centurion.
In his post-match news conference, Cook highlighted the influence of Bayliss.
"Trev gave us a kick up the a*** at lunch," said the skipper.
"Rather than sulking about it the lads looked at themselves, led by Broady, and I think there was a real intensity in the field for that two-hour session [as South Africa slumped to 71-8 at lunch].
"It seemed to work, so well done Trevor. It really helped."
Cook reserved high praise for Broad, who added another spectacular, match-winning spell to his increasingly lengthy list.
"It's a privilege to captain him," said Cook. "When he gets on a roll like that you just let him go."
Victory at the Wanderers means England have won an away Test series for the first time since 2012.
"I'm looking forward to getting back in the changing room to spend some time with a group of guys who've done something very special," Cook added.
"It really has been a squad effort. It's a real privilege to lead this group at the moment because they're desperate to do well and enjoying each other's success."