New Words and Terms
Weed-Whacker: An electrically powered grass trimmer
Trimming: To make (something) neat or of the required size or form by cutting away irregular or unwanted parts
Metal Detector: An electronic device that gives a signal when it is close to metal.
?Did you get the point
The old man is trying to cut the grass using a lawn mower, but then he understands that it is not a lawn mower but a metal detector!