Possible Clues:

• Language error such as Mike Tyson’s “I might just fade into Bolivian” comment after a 2002 defeat
• Use of an inappropriate, though similar-sounding, word
• The French forward is wearing old lady's slip
• Grammatical solecism
• Unintentional confusion of one word with another (by someone in a Sheridan play?)
• Rugby player, during brief unease back in scrum, shows verbal confusion
• Blunder in theatre not altogether normal - a prop is missing
• What features more than once in The Rifles by Sheraton?