Mr. Silly book by Roger Hargreaves 

Mr Silly is the silliest person you will ever meet. He lives in Nonsenseland, which, as you can imagine, is full of silliness. For example, the pigs don't say 'Oink!' They say 'Moo!' How silly.

-- The spring in his step has got MR. BOUNCE down -- can a pair of heavy boots help lift his spirits?
-- Join a boy named Jack as he goes on a wild adventure with MR. DAYDREAM -- without even leaving his desk
-- Square apples, twisted teapots -- who knows what will win, when MR. SILLY and his nonsensical neighbors compete for the yearly Nonsense Cup?
>-- Mr. Tickle's tickling is out of control Can LITTLE MISS MAGIC conjure up a solution?