my thin skin
i understand most moms are proud of their kid's reaching milestones or surpassing them even, but is it really necessary to tell me how "far behind" my child is? do i care that your child reached such-n-such milestone 2 months before my kid?
my answer? no. i don't care. good for you or whatever.
but, be a little considerate. show some humility. you're breaking the unspoken rule about how rude it is to brag and tell people how supposedly-awesome your kid is over theirs. oh? you've never heard that? well, learn it. otherwise, my big mouth is going to have a hard time keeping shut.