It's the herd mentality...everyone else is doing it, I will too.
It's not an idiom because you can figure out the meaning by context - you are willing to go through dangers or hardship for something or someone.
"To be" is not an idiom - it's a verb.
The meaning of the idiom suck it up is to stand up or stand tall amidst all troubles. It can also be reversed as "compose yourself", "bear your troubles", and "go on".
To go up against your fears. To brave something means to face it and to deal with it. Braving the frenzy is an unusual usage, not an idiom itself. Presumedly we might "brave the frenzy" if there were a maddened crowd between us and our destination, and we attempt to go through it.
The idoiom stand out means to be easily noticed or seen. Using the idoiom in a sentence you could say, her bright red hair helps her stand out in a crowd.
It means "to try it", a better way of saying it is "have a go at it" . happy speaking!
It means that everything is in place to carry on
Pest is not an idiom. It's a word.
The idiom "apple shiner" means the teacher's pet.
It's short for "get a bite to eat" - it means to go have something to eat.
That usually pertains to a weapon discharging when you don't want it to.
The meaning of the idiom in the pink of health means being in good health.