I had one DC when I was very young (followed by another when I was very old).
My friend had two DC in relativity quick succession. Her youngest was 7 years older than DC 1, so I was well out of the baby stage when her youngest was a toddler.
I moved to a new house (it was rented) and she came with her toddler to look around. It kind of annoyed me as she turned up uninvited and she knew that I had another, mutual, friend visiting at the same time.
It was safe for such a youngster, as I'd barely unpacked, so there were no ornaments, etc, for her to find.
My friend didn't tell me she was toilet training the toddler, she didn't bring a potty even. Her DD was also still in a pram.
Our mutual friend was heavily pregnant and sitting down, so toddler friend came in to chat. I kept saying I was worried about leaving her DD in the kitchen, but she said she was fine and had toys.
We heard a hell of a bang, friend rushed to see her DD. I followed a few minutes later, after she called out to say everything was fine.
She had the pushchair up against the other internal kitchen door (there were two), but the door was now open and pushed against the door, with the door stay keeping it open - fine.
She was bringing her DD into the front room with us, when her DD suddenly peed herself on the floor by the front door - a floor I had new carpet laid the day before. Due to this she rushed off to get her DD home and changed, and left me to entertain pregnant friend and clear up a whole load of urine soaked carpet.
Pregnant friend and I went into the kitchen to further inspect the noise we'd heard, and I closed the door - which is when I noticed the NEW door was broken. The front panel of the door had been ripped off, I found the wood in the bin. I can only guess the pushchair had somehow been wedged under the door and when pulled it broke off. Friend had kept the door open to stop us seeing the damage.
I did confront friend about it, but she denied it, although it was fine before she arrived and random bits of wood don't put themselves into the bin.
I had to pay for a new door as it was a rented house and the doors were fitted prior to me moving in.