Where do the child smurfs come from on smurfs?

Answer 1

Nat, Snappy, and Slouchy used to be adult smurfs but when Papa Smurf asked them to go to father time's cave to fix his hour glass. Then Natural Smurf's butterfly flew into a clock running backwards. The smurflings ran after it and got turned into smurflings.

Sassette was created by the other smurflings so that Smurfette who wanted another smurfette in the village but they used a smurf sized bucket of blue clay which produced a 2 apple tall smurfette. Then they put the same smurfiness spell as was used on the original Smurfette to make her a cute tomboy smurfling.