Hey everybody, Sam here. Last week's butt episode was, as we mentioned our season 3 finale,

and before we jump into season 4, we're taking a week off to recharge our brains and our funny

bones, so we've got a classic episode for you this week. Before we get to that, I'd be

remiss if I didn't mention that Sarri was the overall season 3 winner with 21 wins to my 16.

Congratulations Sarri, all your time at MIT paid off. We'll see you next week to kick off season 4,

and until then, enjoy this episode about the internet.

Hello and welcome to SciShow Tangents, the lightly competitive knowledge showcase,

starring some of the geniuses that make the YouTube series SciShow happen. As always,

I am joined by Stefan Jen. Hey, what's your tagline? Yippazippaduda. Great one, great one.

Sam Schultz also was joining us today. Sam, what is gular fluttering?

It sounds like it would maybe be the heart would be involved in it. So it's like when the floppy

part of the heart, it just falls off. Is that right? No, the actual answer is that

it is when birds wiggle their throats to cool off. Oh, that's cute. Is that like the pelican sticking

its spine through its throat? That is why I was thinking about gular fluttering because I was looking

at that picture of the pelican sticking its neck into its throat. It's putting its neck into,

like it said, sticking its spine through its throat, which is not what happens. It just pushes

its neck up into its pouch to increase the surface area for its blood vessels, which if you don't

know what we're talking about, it's a terrible thing that pelicans do to cool off. Sam, what's your

tagline? Small little man who lives in a tree stump. Siri Riley is also joining us today. What's

your tagline? Too much dirt. And I'm Hank Green. My tagline is always tick-tockin. Always,

right now. I'm tick-tocking now. Every week here on SciShow Tangents, we get together to try

to one up a maze and delight each other with science facts. We're playing for glory, but we're

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