10. (To) Face the music
In literal terms facing the music means to turn your body to the direction of the music and stand in front of it. But if your friend or your parents tell you to face the music, there’s a much harsher meaning.
It means to “face reality” or to deal with the reality of the situation and accept all the consequences good or bad (but mostly bad). Perhaps you’ve been avoiding something because you feel unsure or scared of the outcome. Maybe you lied to your teacher and she discovered the truth and now you have to face the music and accept the punishment.
“I can’t understand why I failed math.”
“You know you didn’t study hard, so you’re going to have to face the music and take the class again next semester if you really want to graduate when you do.”