"You know you are a parent when going to the toilet becomes a spectator sport!"
When I was a kid, I used to go to my cousin's house for the weekend. My aunt and uncle got their printing press business just below their home. So no matter how late at night, we would spent time in the printing press folding papers. And I remember my aunt saying "I am so busy all day, I don't even have time to pee." I find that very funny since it will just take you 2-3 minutes at the most to pee... but now that I have my kids of my own, I understand what she was saying.