Plain English please! (or whatever language you coach in)
"You're damned if you do and you're damned if you don't."
"You're burning your candle at both ends."
"It's boiling out", "do that ASAP"
Think about these sayings. Who would know them and at what age would they have understood their meaning? Your job as a coach is to make yourself understood so you can transfer your knowledge to your players.
Let's discuss the age of understanding jargon and slang.