Nailbiter

Ned couldn’t remember a day he didn’t bite his fingernails.
The tips of his fingers were always ragged, bloody, and infected.
So he stuck his hands in a pair of gloves and duct-taped them shut to keep from biting them.
Or, so he thought.
By the time he bit through the leather in the gloves, his fingertips had healed and the urge to bite his nails was out of his system.
Of course, he’d ruined his teeth in the process, but Ned never really smiled, anyway.
Besides, it’s so much easier to type a colon and a closing parenthesis.