Can you understand that French joke ? What do they say about us?

Question

Answer 1

'Can you understand that French joke  ?[sic]'

– Yes, I can.

'What do they say about us?'

– I cannot help you with this question. Because you have mentioned no antecedents one cannot know to whom 'us' refers.

Answer 2

Who is "us"? There are four people to be vaccinated, one is English, one is German, one is American and one is French. The joke is about the French person, primarily. They refuse to be vaccinated until they're told that, because they're French, they don't have the right to be vaccinated. The American accepts being vaccinated after being told their neighbor was vaccinated, if that's the "us" you're referring to. 

Answer 3

It's funny haha

Answer 4

it says British people are more prone to corona virus ..