Yes, this seems to be the case in our household. I do not know how my children do it - seeing as they can't talk - but they seem to be able to communicate when to poop at the same time. In the last week I have been noticing that when one poops the other one does. Yes, funny to you on the outside. Not so funny to me who thinks she is rid of the stinch only to find that another diaper must be changed.
Honestly, I wouldn't have it any other way. I awoke yesterday morning to Doug getting up at 6:30 a.m. to get in the shower to get ready for work. I thought to myself I am so glad I am not him and that I am able to stay home with my babies - poop and all. Thanks, Doug, for working so hard so that I can be with our children and thanks to the Chicken House (Chick-fil-A: aka Mike Moore - my boss) for letting me do the majority of my work from home so that I can be an at home mommy. I love my stinky, poop filled job. :) - and I don't mean the work I do for the chicken house! :)