Now that I have a very active, talkative toddler, I have discovered some things that I really don't like to hear.
1) Suspicious silence
2) "Watch!" as she is standing anywhere but the floor/ground
3) "Uh oh."
4) A loud thump, followed by wailing.
5) Sudden, terrified crying in the middle of the night.
6) Creepy laughter
7) Hearing your sweet kiddo's voice suddenly drop a couple octaves as she jabbers to herself in the car seat.
8) Inexplicable, high pitched shrieking.