Mine was when my older sister told me "Put that baby in her room now...stop leaving her in her moses basket in the sitting room all night"
I, like many others I'm sure, had been keeping her in the sitting room with DH and I all evening. Fine when she was just tiny but by this point she was coming up for 3 months.
It was like a breath of fresh air to realise I could put her to bed with her monitor in our room. We could be alone.
My sister's was when she was weaning her twins and would prepare a bowl of food for them each...and two spoons. Then she'd go back and to between the bowls and the twins.
Another twin Mum called round and said "Just put two servings in one bowl...and have one spoon"
And she did...obviously when they were feeding themselves they had a bowl or plate each but those frantic mealtimes calmed down a bit for her!