"Mummy, I want to do a rolely poley".
"Ok do one then"
"Mummy, why can I do a roley poley?".
"Because you want to".
"Mummy, why do I want to do a roley poley?".
"Because you like them".
Does said roley poley.
"Mummy, did you see my roley poley?".
"Yes"
"Mummy, was my roley poley massive?".
"Yes it was the biggest one I've ever seen".
"Mummy, why was my roley poley massive?".
Etc. Etc. And on and on and on!