Related Clues:

• It may be costly
• Commit a blooper
• Shortstop's blunder
• Inattentive error
• "File not found," e.g.
• Jim Carrey often plays one
• Misapprehension
• Word with "time" or "memory"
• Moronic mistake
• Bloomer
• Jackass
• End, as a magazine subscription
• 'Does not compute'
• Execute poorly
• "Oopsy!" evoker