You must be joking! 

 - UK  Ladybird Ltd,   c 1986. 
 - 156 p. : ill.  ; 18 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-7214-0966-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Wit and humour, Juvenile
<br/><br/><label>Dewey Class. No.: </label>828.914 Y84l 1986