It's your boy, Little Apple.

Today, Grapefruit's gonna do the Backpack Challenge.

If you haven't seen any Backpack Challenge videos,

you should definitely check 'em out.

Basically, somebody tries to run a gauntlet

of backpacks getting swung and thrown at them.

Seems painful, but Grapefruit's not scared.

- That is correct.

Not to brag, but I have an undersized amygdala.

Thus, fear is strikingly absent from my personality.

- So let me get this straight, you're not worried at all?

- Look, I've done my share of YouTube challenges.

I've been around, 'ight?

And this one, the Backpack Challenge,

might just be the easiest challenge imaginable.

- The easiest?

- The easiest.

Little Apple, it's all physics and I have a staggering mind.

Correct me if I'm wrong,

but here are the rules as I understand them.

My singular goal is to get from this line to that line.

- Correct.

- While backpacks get hurled at me from all directions.

- Correct.

- (exhales) Piece of cake.

Look how tiny your backpack is.

Besides, how hard could you possibly hurl that thing at me.

- Who said I was gonna be the one doing the hurling?

- What do you mean?

Who else would?

(record scratching) - Hey,

we're perfectly capable of hurling ourselves, I assure you.

- Gulp.

- Yeah, feel the burn.

Pain is pleasure. (laughs)

- Double gulp.

- Hey, you hear that, fellas?

This Grapefruit here thinks the Backpack Challenge

is gonna be the easiest challenge he's ever done.

- Easiest?

Doubt it.

Shortest?

I'll make sure of it.

- Triple gulp.

- Well, Grapefruit, you're up.

Make it from this line to that one and you win.

- Okay, then, here we go.

No sweat, bada bing, bada boom.

- Any time, Grapefruit.

- All right, if I don't make it, tell my mom I loved her.

Okay, so far so--

(low thudding) (low screaming)

- I'm gonna go ahead and mark how far you got.

Wow, that's embarrassing.

- It is not 'cause I'm gonna go again.

- You're really gonna put yourself through that again?

- Yeah, that was just a test run, so I could feel them out.

Don't worry, I got a plan this time.

- Well, if you say so.

- Hey, fellas, the Grapefruit wants another go at it.

- Yo, maybe we should get

Underground Steve involved this time?

- Good call and let's load up

on some more weight this time, huh?

Just to make sure he really feels it in the morning.

- Ready, Grapefruit?

- Ready, and in case I don't make it,

tell my father I love my mother!

Geronimo!

(dramatic music)

(low grunting) (Grapefruit yelling)

- Whoa, Grapefruit, you did learn from last time.

- Sure did.

These guys can't hurt me if they can't touch me.

(Grapefruit screaming)

- Underground Steve!

- (gasps) well, I didn't see that coming.

I'm absolutely floored. (laughs)

- (laughs) Underground Steve approves.

- Leave the jokes to Orange, pipsqueak.

I want one more crack at it.

- You haven't had enough?

Some people just don't know when to quit.

Let's load up on all the way fellas.

(metallic clanking)

- Grapefruit those are some really heavy backpacks.

Are you sure this is a good idea?

- Little Apple, I have it figured out.

The heavier they get, the slower they get.

This time, they're gonna be so weighed down,

I'll able to dodge them with ease.

- Oh, well, that's a good point.

- Of course it is.

I have an oversized left brain hemisphere.

Now, let's do this.

- Can't wait.

- Here goes nothing.

Oh, and if I don't make it, tell my mother that I love

"Star Wars: Episode I - The Phantom Menace",

and I will not apologize for it.

It's go-time!

(low grunting)

Ha, ho ho, oh.

- He's right.

The backpacks are too slow.

- And I made it.

- You did it, Grapefruit.

You conquered the Backpack Challenge.

- Challenge, more like the Backpack Easy. (laughs)

- Hey, better watch your butt, Grapefruit.

- Why would I do that?

It's not like any of you guys can catch me.

- No, really I mean you should watch your--

(Grapefruit screaming) - Underground Steve.

(upbeat guitar music)