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Hey, Smarty Pants, stick out your tongue.

Yeah, I said stick out your tongue.

Now, with your tongue out, make a funny face.

Ha-ha, nice one. Now, give me a nice loud raspberry. You know,

well, I heard that. So basically, that's what your tongue is for, making funny faces and raspberry noises.

Oh, wait, there might be a few more things. Can you think of any? What else can your tongue

do? It can look ice cream. Sure. Did I hear someone say taste? Yes. Great. But how does your

tongue taste? How do taste buds work? And what are some other surprising

usages for a tongue? Spoiler alert. Some are pretty gross. Huh? Oh, and if you haven't already,

you can put your tongue back in your mouth now. Get ready for another whiff of science on.

Who's Smart Egg? Who's Smart Egg? Who's Smart Egg? Who's Smart is it you? Is it me? Is it science?

Or history? Listen up. Everyone, we make smart-ing lots of fun on who's Smart Egg.

Okay, Smarty Pants, let's do a little experiment. Before we begin, though,

you have to wash your hands for 20 seconds. If you can't wash your hands, just listen for now

and try this later after you hit the sink. The rest of you press pause on the show and start scrubbing.

Done? Good. Now, stick out your tongue as far as it can go. A little farther

and grab it with your super clean fingers. Good. Now, say something. Anything. Your name,

...