Cats are a kind of alien...

“Have  you finished your homework yet?”, I asked the (nearly) six-year old.

“I am thinking.”

“How long does it take you to think of ten interesting facts about a cat?”

“I can think of only three facts”, he insisted.  

“Okay, tell me. And I will help you with the rest.”

“Cats are a kind of alien, because when they are angry, their nails come out”, he began.

I struggled to keep the smile off his face, but realized why he had been struggling.

Shouldn’t a teacher be happy with a couple of such facts than a dozen more inane ones?
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A drabble is a story told in exactly 100 words.