Example: You won $1000 in the Lotto, you lucky stiff.
Origin: "Stiff" is defined as an ordinary person, an average Joe, even a failure or flop. A "lucky stiff" then is an average Joe who got lucky. The suggestion here is that the person was undeserving and unworthy, just lucky.
The ashes of the average cremated person weigh nine pounds...Show More Weird Facts"The doctors X~rayed my head and found nothing."~Dizzy Dean explaining how he felt after being hit on the head by a ball in the 1934 World Series