What is it that you do again?

When someone asks me, "What do you do?" I wonder if I should get all snarkey and say something like, "I make milk, nurse a baby, drive hither and yon daily at the service of a five year old, all the time feeling guilty that there are at least three loads of laundry waiting, dinner to be planned and shopped for, and dog hair dust bunnies roaming wild on my hardwood floors."Then I would ask what they do, and they would say something lame like, "I'm in real estate."