What is a platelet anyway?

Driving down the road with teenagers, I had the following conversation with one teenager:

Teen:  ” . . . so I was thinking we could use that song as a platelet for our song.”

Me:  ” . . . a platelet?  Do you mean a template?”

Teen:  “Uh.  Yeah, template, whatever.”

Me, smiling:  “Do you even know what a platelet is?”

Teen:  “Yeah . . .  It’s a really small plate.”

Me, instantly hysterical:  “A really small plate?!”

Teen:  “What?”

Me:  “A platelet is a kind of blood cell . . .”  [Note: Slightly inaccurate, but still, close enough.]

Teen:  ” . . . ”

I had begun to laugh so hard I was crying . . . I couldn’t breathe.

Now, days later, all I do is think . . . platelet, really small plate . . . and I am amused all over again.

That is all.