You don't stop laughing because you grow old; you grow old because you stop laughing.    From LearnThat.org.  [Michael Pritchard]

laughing children.    From Wordnet, Princeton University. 

Adjective : a laughing child. ,a laughing stream; laughing flowers. ,The increase in crime is no laughing matter.    From Dictionary.com. 

Verb (used without object) : He laughed inwardly at the scene. ,A coyote laughed in the dark.    From Dictionary.com. 

Verb (used with object) : They laughed him out of town. We laughed away our troubles. ,He laughed his consent.    From Dictionary.com. 

Noun : After all the advance publicity, the prizefight turned out to be a laugh.    From Dictionary.com. 

In this day and age laughing is the best medicine.    From Wordnik.com.  [The Book in Review] Reference

I believe that laughing is the best calorie burner.    From Wordnik.com.  [Believe] Reference

Nitrous Oxide N2O is commonly known as laughing gas.    From Wordnik.com.  [Hansen Step 2 – First Thoughts « Climate Audit] Reference

Nitrous oxide (NO) is commonly known as laughing gas.    From Wordnik.com.  [HOI-19 - Local News] Reference

I am once again laughing so hard I will wake the kids.    From Wordnik.com.  [I do believe my husband owes ME a press conference « Bored Mommy] Reference

They became known as the laughing stock of the community.    From Wordnik.com.  [Latest Articles] Reference

Favorite: Russell followed by Eric laughing from the jury.    From Wordnik.com.  [Jeff Probst blogs 'Survivor: Samoa': episode #10 | EW.com] Reference

Hi Melissa, wait! all the laughing is going on without me!.    From Wordnik.com.  [A butcher, a rooster, and an awkward moment] Reference

This made Herr Baby begin laughing, which was a good thing, wasn't it?.    From Wordnik.com.  [The Adventures of Herr Baby] Reference

As he was going through the door she called a laughing reproach to him.    From Wordnik.com.  [A Sheaf of Corn] Reference

MF looks very happy posing though and the one of him laughing is so cute.    From Wordnik.com.  [Our Little Snowman] Reference

Poets, comic writers, and novelists delight in laughing at large families.    From Wordnik.com.  [Janey Canuck in the West] Reference

This was thought very witty, and we spent a minute or two in laughing at it.    From Wordnik.com.  [The Boys and I: A Child's Story for Children] Reference

It is nothing to laugh about, although people will persist in laughing it off.    From Wordnik.com.  [Postwar Treatment of Germany] Reference

'And would both those reasons,' cried Camilla, again laughing, 'make against me?'.    From Wordnik.com.  [Camilla: or, A Picture of Youth] Reference

Yes, the Wall St. fat cats are once again laughing at their pathetic right-wing rabble.    From Wordnik.com.  [Think Progress » Exit Survey Of Massachusetts Voters Confirms Lack Of Enthusiasm Among Progressives Hurt Coakley] Reference

I guess farting at your aides and laughing is in keeping with the decorum of the office.    From Wordnik.com.  [Button Your Lip Baby And Button Your Coat | ATTACKERMAN] Reference

The guests walked in laughing and talking with their big voices so that the rafters rang.    From Wordnik.com.  [Viking Tales] Reference

When he breaks out laughing, is he in character, or is he amazed at what he was been given to read?.    From Wordnik.com.  [Ballardian » “Enthusiasm for the mysterious emissaries of pulp”: an interview with David Britton (the Savoy interviews, part 2a)] Reference

But this statement was cut short by Kilpatrick who piped in laughing, “THEY have to get back now.”.    From Wordnik.com.  [Lynyrd Skynyrd – The Men Behind Skynyrd « Lynyrd Skynyrd Dixie] Reference

Obama is a known left-wing international socialist - I consider the word laughing at him to be a good sign.    From Wordnik.com.  [Latest Articles] Reference

The young generation joined Margaret Henan in laughing at them, but the old crones continued to shake their heads.    From Wordnik.com.  [Samuel] Reference

You're right, of course -- given the choice between laughing and crying, laughing is generally the right way to go!.    From Wordnik.com.  [A Latke by Any Other Name...] Reference

Then she called a laughing good-bye to all of us at once, and showed us how to ride right, as she flashed toward the.    From Wordnik.com.  [Laddie; a true blue story] Reference

They applauded her lustily; they revelled in laughing praise, yielding to a glow that they imagined to be pure magnanimity.    From Wordnik.com.  [The Convert] Reference

Then she called a laughing good-bye to all of us at once, and showed us how to ride right, as she flashed toward the Little Hill.    From Wordnik.com.  [Laddie: A True Blue Story] Reference

And I have that feeling until I get through the outer room, and then I see these guys through a mesh curtain laughing at The Golden Girls.    From Wordnik.com.  [In a Ruined Country] Reference

(and thanks for helping me bounce the baby – laughing is a great way to bounce!).    From Wordnik.com.  [If Your Child Farts In A Forest, And You Laugh, Will Anybody Hear It And Judge You? | Her Bad Mother] Reference

Well, maybe his laughing was a little over the top ….    From Wordnik.com.  [Lone Star Ball] Reference

I can't recall laughing that hard in a movie theater since.    From Wordnik.com.  [unclebob Diary Entry] Reference

The economy wrecked, the whole word laughing at us and our weak position.    From Wordnik.com.  [Hot Air » Top Picks] Reference

It has stayed with me over the years, the idea of laughing instead of being afraid.    From Wordnik.com.  [Planet RMFO Blog] Reference

OSLO (Reuters) - Thawing permafrost can release nitrous oxide, also known as laughing gas.    From Wordnik.com.  [Scientific American] Reference

In each case, the ha ha's must be made without laughing, which is almost an impossibility.    From Wordnik.com.  [Games and Play for School Morale A Course of Graded Games for School and Community Recreation] Reference