Hearing your daughter fall down the stairs.
Doug was downstairs and I was upstairs when she fell last night. We wonder if she tripped on the pants she was wearing. I have no idea how high up she was, but I swear I heard her falling for a good 5 minutes so she must have climbed pretty far. And I also think my screams of "DOUG!!!" and much more colorful language echoed through the house for even longer.
Fortunately she seems completely fine (which guardian angel do I thank?!), but we were all a friggin' mess afterwards.
Guess that's the last time I'll ever let her climb stairs. Or walk. Or leave my side. Or function without me.