The Canadians are credited with the story of the stupid Yorkshire sentry:

The first night he stood guard he hailed an approaching officer in proper form:

“’Oo goes there?”

“Canadian rifles.”

There was a moment of silence. Then the Yorkshireman repeated:

“’Oo goes there?”

“The Canadian Rifles,” was the impatient answer. More silence. Then the Yorkshireman again challenged:

“’Oo goes there?”

“The Canadian rifles, you qualified blighter,” shouted the enraged officer.

There was a long period of quiet while the Canadian watched the Yorkshireman’s obviously ready rifle. Then there was a moan from the sentry:

“Blowed if I hain’t forgot what to say next!”