You Know You're a Parent When...

...when you change the sheets on your bed is determined by a leaky diaper.
And all the other ones we heard before we had kids:
...you spend money on baby clothes rather than clothes for yourself.
...you know the words to a gazillion kids' songs.
...you talk about bowel movements, potty training, leaky breasts, etc. without flinching.

Any others you want to add?

Pic: JT enjoys hammering as the evening sun streams in.