How do you say yes in French is there a specific phrase or it oui which sounds like wee wee?

You're right, "oui" sounds like "wee wee" in English. It's the most common way to say "yes" in French.

There are a few other ways to say yes, depending on the context:

* "Ouais" is a more informal and casual way to say "yes." It's often used with friends or family.

* "Si" is used to agree with a negative statement. For example, "Tu ne veux pas aller au cinéma?" (You don't want to go to the cinema?) "Si." (Yes, I do.)

* "Bien sûr" means "of course" and is a more formal way to say yes.

* "Certainement" also means "certainly" and is another formal way to say yes.

So, while "oui" is the most common and versatile way to say yes in French, you have other options depending on the context and your desired level of formality.