Someone Farted, by Bruce Eric Kaplan

The Krupke's weekly trip to the supermarket took a nasty turn when
SOMEONE FARTED.
That's the title of Bruce Eric Kaplan's book about a foul smell and the way it derails a routine family outing.  No one will take the blame.  The smell permeates through the car.  Dad is so distracted that he gets pulled over.  The policeman takes them all to jail.  And still, no one will admit they dealt it.

This is a silly, fun book that most any kid and family can relate to.  There's no particular lesson, although it's nice to see how the experience brings the family together.  Check it out.