You know you're the parent of a toddler when...
... you know for certain that taking a particular route to school will cause you to pass exactly 12 fire hydrants. You are so sure of this due to the fact that every time you pass one, you hear the same litany:
"There's a fire hydrant! That's where a fireman hooks up his hose and turns a knob and the water comes out and they put out the fire!"
Without fail, without deviation from this script. Twelve times.