Related Clues:

• Bobbled
• Was faulty?
• Bobbled one
• Made a misstep
• Acted human?
• Didn't get 100, say
• Overthrew, e.g.
• Messed up the math, say
• Did a dumb thing
• Made missteps
• Made a mistake, was wrong
• Made mistake, was incorrect
• Made mistake
• Not being right made 'er blush
• Having done wrong, about to turn red