Why kids like to hit the ground with Pebble?

Ah Cheng: Today the weather v hot ... hmmm that looks good

Babe: See what see, never see pretty gal before isit?

Ah Cheng: Errrr ... I give you this doll and you give me ...

Babe: My heart? *blush*

Ah Cheng: Errrr ... I only want the fan actually cos its really hot here.

Babe: *faint*

Ah Cheng: Ok lar how about this Pebble? This is a magical pebble and your wish will be granted if you hit the ground with it for 100 times.

Babe: Really??

Ah Cheng: Really? You want anot? Cheap cheap just give me your fan!

Babe: Ok lor *crawl away happily with the Pebble*

Ah Cheng: Hiak hiak hiak hiak ...

PS: This belief of knocking the Pebble has been spread far and wide and past down for many years. So dun blame your child if they keep knocking the pebbles on the ground hiak hiak