Said in a time when death is imminent.
John: "I can't believe we're all going to die like this..."
Mark: "Smoke em if you got em, boys. This is it."
John: <lights up>
Originated in mid-20th century wartime. Commonly used during small gatherings of allied troops. Tobacco was a rationed commodity, at the time, and was generally in short supply.
The term was later popularized in Hollywood war movies.
"It's getting rough out there. We've got to review strategy. Smoke 'em if you got 'em. We've got some tough decisions to make...."
2. A fast moving ping pong rally.
3. When an activity is chosen, and its not sure if everyone has the required equipment, the leader yells smoke em if you got em, and the activity commences