How do you Say This is so funny in French?

There are a few ways to say "This is so funny" in French, depending on the context and how strong you want the emphasis to be:

Formal:

* C'est tellement drôle! (This is so funny!) - This is the most common and versatile way to say it.

* C'est vraiment très drôle. (This is really very funny.) - This emphasizes the humor a bit more.

Informal:

* C'est trop drôle! (This is too funny!) - This is more informal and emphasizes the amusement even more.

* C'est hilarant! (This is hilarious!) - This is a stronger way to say "funny" and indicates that you find something extremely funny.

You can also use other expressions like:

* J'en ris! (I'm laughing!) - This is a good way to express your amusement directly.

* C'est à mourir de rire! (This is to die for laughing!) - This is a very strong expression used to express great amusement.

The best choice for you depends on your audience and the context of the situation.