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Being the youngest of 10, with two of the oldest already having children 2 & 3 yrs older than me, I was born an uncle, so I got to be around as 29 more nephews and nieces joined the club, so I have a fair amount of experience dealing with 'babytalk'
Small children's squeals and screams of (apparent) delight, causes me to experience icepick stabs through my head, but that hasn't always been so.
I love my family, but that racket of children having fun...well I just have to give it a wide berth.