A fun way to entertain unruly 8th graders

So my 8th grade class has, for the past 2+ years, been the bain of my existence, taking great joy in testing my patience (which has worn quite thin as of late).  They're utterly out of control on most days, but are all capable of behaving themselves; they simply choose not to.  My being pregnant, however, has somehow captivated the interest of nearly every one of them.  Today they were all wanting to touch my stomach, which has just started to grow.  I guess at 18 weeks, I was expecting to be a little bit bigger than I am now.  Clothes are still fitting the same as they always have, and only after I've just eaten do I feel any larger.  

Anyway, I took advantage of my unusually respectful, good-natured students and entertained their questions, telling them about our plans to have a home birth without drugs.  They were surprisingly mild-mannered for the remainder of the class, diligently painting watercolor turtles, feathers, and medicine wheels in preparation for next week's National Indian Day.  Now I know how to keep these kids in check; I'll just have to keep cooking up stories of the baby I'm having, even if I'm not!  The worst part of my day is now over, and blessedly, it wasn't so bad at all.