British joke: Who is a liar? Who is a liar?

A newspaper once published an editorial, bluntly pointing out that half the people in the city Council were liars. Offenders will be arrested.

The editor made the following statement: half the people in the city Council are not liars. Once, a newspaper published an editorial, directly pointing out that half the people in the city Council were liars. After being punished by detention, the editor made the following statement: half the people in the city Council are not liars.