Just joking :  300 hilarious jokes, tricky tongue twisters, and ridiculous riddles. 

 - Washington, DC :  National Geographic,  c2012. 
 - 207 p. :  col. ill. ;  18 cm. 
 - National Geographic kids. .
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781426309304 (pbk. : alk. paper) 9781426309441 (library binding : alk. paper) 
<br/><br/><label>LCCN: </label>2011034649 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wit and humor, Juvenile.
<br/><br/><label>LC Class. No.: </label>PN6166  / .J87 2012 
<br/><br/><label>Dewey Class. No.: </label>818/.602