think on your feet

US /θɪŋk ɑn jʊər fiːt/
UK /θɪŋk ɑn jʊər fiːt/
"think on your feet" picture
1.

pensar rápido, reagir prontamente, improvisar

to be able to think and react quickly, especially in an unexpected situation

:
A good salesperson needs to be able to think on their feet.
Um bom vendedor precisa ser capaz de pensar rápido.
When the unexpected question came, she had to think on her feet to give a suitable answer.
Quando a pergunta inesperada surgiu, ela teve que pensar rápido para dar uma resposta adequada.