Related Clues:

• Put one's foot in it
• Committed a sin
• Strayed from the straight and narrow
• Had to say "Oops," say
• Dozed (off)
• Dozed off
• Went the wrong way
• Gave silent approval
• Made a slip
• Signalled to Canon in the middle, in front of strange writer
• Made a typo, e.g
• Acted in a human way?
• Overthrew first, say
• Was not right
• Behaved humanly?