I have two children. Nicky is six and Harry is about a year and a half. While building a spice rack for their mother last Saturday I overheard this "conversation" taking place in the living room:
Harry: Doo bada Icky!
Nicky: Get off me, Harry!
Harry: Doo bada Icky!
Nicky: Ow!
Harry: Oo!
Nicky: Ow!
Harry: Oo!
Nicky: Ow!
Harry: Oo!
Nicky: Ouch!
Harry: Ook!
Nicky: Ouch!
Harry: Ook!
Nicky: Ouch!
Harry: Ook!
Nicky: Mom! Harry's hitting me!
Mom: Harry, get off your brother.
Harry: No! Doo bada Icky!
Nicky: Ouch!
Harry: Ook!
That's all I could hear, Nicky yelping and Harry copying him. After that, my laughter drowned them out.