Related Clues:

• Pain in the butt
• Cause for slapping oneself
• Mole, e.g.
• Annoying type
• Component of a cloud, perhaps
• Gadfly
• Annoying one
• Little brother, maybe
• Yapping dog, e.g.
• Tiny nuisance
• D-Con target
• Bug bomb target
• Buzzing nuisance
• Buttinsky, e.g.
• Punkie, e.g.