That crooked tooth that makes that cute guy or girl even cuter, adding character and charisma. Also the crooked tooth that makes the person you dislike even more horrible in appearance, making you cringe or shrink away.
(Sigh) Tom's snaggletooth may seem like an imperfection to others, but to me it's irresistible.
A girl without a single straight tooth in her smile. Her teeth are crooked like a dogs hind leg and usually spaced pretty far apart. At least one or more of the front snaggleteeth are usually missing.