Two men are approaching each other on a sidewalk. Both are dragging their right foot as they walk.

兩個(gè)人在人行道上分別拖著自己的右腿，相向而行。

As they meet, one man looks at the other knowingly, points to his foot and says, Vietnam, 1969."

他們相遇了，一個(gè)人理解地看著另一個(gè)人，指著自己的腿說(shuō)：“1969年，越南?！?/div>

The other points his thumb behind him and says, "Dog crap, 20 feet back."

另一個(gè)人豎起了大拇指，說(shuō)“再走20英尺，狗屎?！?/div>