The Flash: The Chemo-Creature

While battling the giant ant, The Flash says "Retreat is better part of valor," a play on the common phrase "Discretion is better part of valor." The phrase is based on a saying of Sir John Falstaff in William Shakespeare's Henry IV Part One, where it actually reads "The better part of valour is discretion."

When Flash is trapped in the cocoon two "old-timers" discover him. After breaking free Flash speeds away, and the men's hats fly off their heads, revealing one man to have black hair and the other to be mostly bald. In the next shot of the two men, the bald man suddenly has a full head of hair.