What if Smurfs were real? Presumably the systematic biology folks would have some words.
by David Ng

What if Smurfs were real? The Smurf is actually the result of a symbiotic relationship between two organisms. We believe that Smurfs put their ’embryos’ in the button of a developing mushroom. From a distance, Smurfs seem like they are wearing a hat and pants but as you can see this is a fallacy. The fungus provides camouflage and protective epidermal layers for the creature, while the creature provides nutrients and mobility for the spreading of spores.
Via Nate Ethallinan.

Spores might explain why they don’t really need Smurfette, and that she is likely just a rare variant rather than a female per se.