Purebred Police Dog

The ad in the local newspaper read: “Purebred Police Dog $25.”
Thinking that to be a great bargain, Mrs. Freeman ordered the
dog to be delivered. The next day, a van pulled up, and left her
the mangiest looking mongrel she had ever seen.

In a rage, she telephoned the man who had placed the ad. “What
do you mean by calling that mangy mutt a purebred police dog?”

“Don’t be deceived by his looks, Ma’am,” he replied. “He’s in
the Secret Service.”