1. An expression used to describe a particularly unfancied individual. Red-heads used to be considered less desirable than non-redheads, and stepchildren were supposedly mistreated by their stepparents so to be a redheaded stepchild must have been a guarantee of bad treatment.
Common expression in the financial markets to describe a stock or other security which has fallen out of favour and is getting sold heavily.
1. “That fighter is getting beaten like a red-headed stepchild!”.
2. “That stock is getting spanked like a red-headed stepchild!”.