Little boys and good manners. You don't find those two phrases in the same sentence very often, and for good reason. If they aren't passing gas, they're talking about it.
For those of you with the male variety of offspring, I thought I'd pass along a book recommendation. We keep this book at the dinner table and read a chapter over dinner a couple of nights a week. It presents real-life scenarios in which boys can see why manners matter, and they can practice making judgment calls. I'm learning that little boys actually, truly believe that the 47th dirty diaper joke of the day is funny. If you can explain why it's not, the reasoning might actually stick.
Then after dinner, the book is the perfect size to use for spit-wad target practice.