Suggestions Needed: Humorous Children's Fictions.

[MoreCowbell]

Also, check out:
The Peter and the Starcatchers series by Dave Barry and Ridley Pearson...they are a great take on the Peter Pan characters.
The Great Brain Series by John D Fitzgerald
Here Comes Charlie Moon by Shirley Hughes
13 Ways to Sink A Sub by Jamie Gilson
The Famous Stanley Kidnapping Case or The Headless Cupid, both by Zilpha Keatley Snyder
James Howe books...he might be a little old for these but I still find them hilarious
My Sister the Vampire...Nancy Garden
The My Teacher Is an Alien series by Bruce Coville

 

[Ummm]

books by australian author Paul Jennings.

 

[readsalot]

If you can do fantasy, Vivian Vande Velde has some books that are kind of funny.... at least whimsical.