Tough It Out
A synonym of the word 'endure'.
Private: Waaah what a muggy day it is today. It's freaking hot and the mud is cold at the same time. AAAAAHHH I can't take it any longer
Officer: Tough it out maggot! If you ain't have 'em balls to endure such a lowly, pathetic training, you better pack it up and go home you little shit!!