Related Clues:

• Bobble a fly, say
• Miss the routine grounder
• Misquote, e.g.
• Say 2 + 2 = 5, say
• Prove one's humanity
• Overthrow, say
• Transgress
• Make mistakes
•     Drop a brick
• Make a faux pas
• Make missteps
• Boot one
• Slip or trip, e.g.
• Be incorrect
• Be in the wrong