Related Clues:

• Clumsy sorts
• Party-poopers
• Schmoes
• Schmucks
• Churlish ones
• Maladroit types
• Numskulls
• Klutzy sorts
• Gawky ones
• Foolish fellows
• Needs a washer, possibly
• Doesn't exactly flow
• Stumbling sorts
• Boorish ones
• Needs a new washer, perhaps