Possible Clues:

• Repeatedly show disapproval of blunder
• Surprise! Surprise! That's a mistake
• Having got animated, bear mistake
• Express one's displeasure at the same error
• Scrape, to a tot
• Yogi's pal
• Playground mishap
• Yogi's cartoon sidekick
• Mistake to cut off ends of both wellies
• Repeatedly voice disapproval of clanger