His gap-toothed grin.    From Wordnet, Princeton University. 

The guy smiled a gap-toothed grin and stepped back.    From Wordnik.com.  [At Her Beck and Call]

Here's a survey of some notable gap-toothed beauties.    From Wordnik.com.  [Don't Mind the Gap] Reference

Here's this gap-toothed kid tripping on laughing gas.    From Wordnik.com.  [Sara Catania: Exploiting Kids on YouTube is Not Okay] Reference

She gives a big gap-toothed smile of apparent sincerity.    From Wordnik.com.  [Kidnapped, Raped, Married: The Extraordinary Rebellion of Ethiopia's Abducted Wives] Reference

Nothing on me, 'he asserted with a bold gap-toothed grin.    From Wordnik.com.  [See Delphi and Die]

His shadow followed, displaying a wide, gap-toothed grin.    From Wordnik.com.  [Alfred Hitchcock's Mystery Magazine]

The cabbie smiled in the rear view, a big gap-toothed smile.    From Wordnik.com.  [Mississippi Blues] Reference

Prioress and the broad-speaking, gap-toothed Wife of Bath.    From Wordnik.com.  [English Literature for Boys and Girls] Reference

"Yagbo doesn't mind," the fellow said with a gap-toothed grin.    From Wordnik.com.  [Night Arrant]

That's right, asswipes, smile at me with your gap-toothed grins.    From Wordnik.com.  [idiot-milk Diary Entry] Reference

Another large. man, heavy set and gap-toothed, grasped the other.    From Wordnik.com.  [Blood Test]

Rachel Morei, a wizened gap-toothed widow who reckons she's about.    From Wordnik.com.  [ANC Daily News Briefing] Reference

"How about that!" he cried, as happy as any gap-toothed kid in America.    From Wordnik.com.  [A Special Lesson] Reference

He swiveled to give the Retribution a jaunty wave and a gap-toothed grin.    From Wordnik.com.  [Thief Of Hearts]

I can't wait to wipe the floor with his goofy, gap-toothed face in the fall.    From Wordnik.com.  [Republicans Pick Right-Winger In Key Senate Race, Make Seat More Vulnerable To Dem Takeover] Reference

I see him, arms and legs wrapped around the wire, grinning his gap-toothed grin.    From Wordnik.com.  [The Year's Best Science Fiction 23rd Annual Collection]

"Yes, ma'am," he replied, returning her grin with a gap-toothed smile of his own.    From Wordnik.com.  [The Trouble with Witches]

The gap-toothed fang-lover may just reap the benefits of the year of the vampire.    From Wordnik.com.  [Who Will Be Drunkest At Sunday's Golden Globes?: John Lopez] Reference

The little Irish jockey walked in front of me and gave me a huge gap-toothed grin.    From Wordnik.com.  [Forfeit]

But it was the exact time to ask the beautiful gap-toothed Goldilocks to marry me.    From Wordnik.com.  [The Transom] Reference

Morning rain fell on the Chernobyl Yacht Club, a gap-toothed dock on the Pripyat River.    From Wordnik.com.  [Wolves Eat Dogs]

They greeted us with identical gap-toothed smiles and shook hands like little gentlemen.    From Wordnik.com.  [The Mummy Case]

Bachardy was 18, a star-struck southern California boy with a beautiful gap-toothed smile.    From Wordnik.com.  [Love That Dares to Speak Its Name] Reference

Mercifully, he also goes by the familiar Shrek, a wink to his conspicuous, gap-toothed grill.    From Wordnik.com.  [A People's Kind of Golf Champion] Reference

Bleren was squat and white-skinned, with wispy strawberry blond hair and a gap-toothed smile.    From Wordnik.com.  [Colors of Chaos]

The patroller brushed back his wispy strawberry blond hair and offered another gap-toothed smile.    From Wordnik.com.  [Colors of Chaos]

Sloping blearily from the wings, he wears a rumpled, gap-toothed smile and an aura of trampish menace.    From Wordnik.com.  [The Fall online - latest Fall News] Reference

HAMMER (voice-over): In this corner, David Letterman, gap-toothed funnyman and host of "The Late Show.".    From Wordnik.com.  [CNN Transcript Jun 11, 2009] Reference

And there was a faded Polaroid of Katie holding the first Duke with a happy, gap-toothed grin on her face.    From Wordnik.com.  [One-ClickBuy:SeptemberHarlequinBlaze]

A gap-toothed fellow carrying a large wooden bucket gave a start and gaped at her, so amazed he forgot to bow.    From Wordnik.com.  [A Crown of Swords]

A gap-toothed grin met her frightened gaze, huge black eyes staring roundly out of a dark, slightly shiny face.    From Wordnik.com.  [The Thorn Birds]

Suddenly his wrinkles deepened in a gap-toothed smile, and he seemed to quiver between speaking and doing his duty.    From Wordnik.com.  [The Eye of the World]

Now those bones were scattered and broken, the ossified wainscoting rendered gap-toothed by missing and tumbled bones.    From Wordnik.com.  [Someone Comes to Town, Someone Leaves Town] Reference

His gap-toothed smile disappeared along with his balance, replaced by a wide-eyed look of disbelief as he pitched headlong to the floor.    From Wordnik.com.  [The Woods Out Back]