In the movie “Goodfellas” directed by Martin Scorsese, there’s a really famous moment. Joe Pesci, who played Tommy DeVito, said something that wasn’t even in the script. He asked, “Funny how?” when talking to Ray Liotta’s character, Henry Hill. This unexpected line made the scene super tense and memorable.
The cool part is that this wasn’t planned; it just happened while they were filming. But it was so good that they put it in the movie. It shows how talented the actors were at thinking on their feet and making the movie even better. Now that requires quite some presence of mind and absolutely amazing humour.