What does "お疲れ様" (otsukaresama) typically mean when used in casual conversation among colleagues or friends?

Which Japanese phrase is used to express surprise or awe, similar to "Wow!" in English?

What is the slang term "ヤバい" (yabai) commonly used to express?

When someone says "気をつけて" (ki wo tsukete) to you, what are they wishing you?

What does "なんでやねん" (nande yanen) mean in casual conversation?

In which situation  do you say "おつかれ" (otsukare) ?

a) When you are leaving or when you meet your friends

Which phrase is used to refer to a close friend in Japanese slang?

If your friend says "しんどい" (sinndoi) to you while laghing, what does it mean?

What is the Japanese slang term "グズ" (guzu) commonly used to describe?

If someone says "イケてる" (iketeru) about your outfit, what are they saying?