Sometimes I wonder if American native speakers can perfectly understand what british people speak with their own thick english accent.

https://youtu.be/SUZyNLZZjMs

Hey jook, could you watch this and tell me how well did you understand what the actors said in the movie? Maybe can you tell out of 100%？The video lasts
For me, I could catch only the words of "fuc○ing" even though I've studing english 5 years and fairly understand american english. British english is freaking hard to listen to.