Possible Clues:

• What to do with a 22 blunder (3,4,4,2,2)
• Drop a brick on toe: sit up if not broken (3,4,4,2,2)
• Try on a shoe then make an ill-fitting remark? (3,4,4,2,2)
• Blunder, as one may in Balmoral? (3,4,4,2,2)
• Say the wrong thing, or what to do with the first words of the starred answers
• What a person must do to get into Oxford? Commit a faux pas (3,4,4,2,2)
• Blunder, as one might with one's trainer (3,4,4,2,2)
• Make a tactless blunder (3,4,4,2,2)
• Say something personally embarrassing
• After testing water with toe, make mistaken further commitment? (3,4,4,2,2)