It can be used in a variety of situations, such as:
* When someone is talking too loudly.
* When there is a lot of noise in the environment.
* When someone is being annoying or bothersome.
Here are some examples of how "urusai" can be used:
* "Urusai! I'm trying to sleep!" (うるさい！寝ようとしてるんだけど！) - This means "Be quiet! I'm trying to sleep!"
* "Kono basu wa urusai ne." (このバスはうるさいね。) - This means "This bus is noisy."
* "Urusai! Yamete!" (うるさい！やめて！) - This means "Stop being noisy!"
It's important to note that "urusai" can be quite rude, depending on the context and the tone of voice. It's best to use it with close friends or family members, or when you're feeling frustrated. In more formal situations, it's better to use a more polite phrase like "shizukanaide kudasai" (静かなでください) which means "Please be quiet."