“Good for the character.”
“Make it sing.”
“Just write what happened. WRITE WHAT HAPPENED!”
“Brill, triff, ex, fab, perf, marv, sup, wiz, hun.”
“Everyone needs a sub.”
“Chicken nothing.”
“Soldier on.”
“Mope not. Doss not. Flop not.” (I particularly remember this from when I was a teenager.)