- The Milk-Ness Monster is a gigantic sundae.
I found the recipe in the back of my grandpa's old diary
with a warning, "Do not attempt to eat."
- It's like he's daring us to eat it
from beyond the grave.
- My grandpa's still alive.
- It's Yesley Day, Ty. Do not correct me.
- The Monster combines every type of ice cream
and every topping we have, and even some we don't.
- We'll take it.
- I don't think you understand.
I mean, even with all three of you,
there's just no way.
- Anything can happen on Yesley Day.
Now bring on the Monster!
- You've been warned.
[horn blows]
[dramatic music]
♪ ♪
- Behold! The Milk-Ness Monster.
all: Whoa!
- If you finish this in 30 minutes, it's free.
If not, you get a monster-sized bill.
- I don't think humans were made to eat
this much ice cream.
- We're about to find out.
Either we destroy the Milk-Ness Monster,
or it will destroy us.
It destroyed us.
- Come on, Munchy.
It's the last bite. You can do this.
- No, I can't.
- Hey, is this Yesley Day or No-sley Day?
- Yesley Day.
- Yeah!
- Attention!
[horn blows]
These three heroes have tamed the Milk-Ness Monster!
[cheers and applause]
- Working a second job isn't easy,
but it's moments like this that make it all worth it.
- So what's next for Yesley Day?
Should we just stay here and hang out with Luke all day?
'cause I'm good with that.
- No, it's Yesley Day. We're doing something fun.
- Ouch.
- Okay, Munchy, do your thing. Come up with an idea.
- On it.
Milk. Cold. Ice cream.
I scream. You scream.
We all scream, because we're on a roller coaster.
Coaster World!
- Looks like we're going to my favorite theme park.
Coaster World. - Wait!
I'm terrified of going upside down on roller coasters.
- But there's a new coaster I can't wait to ride.
The Grim Weeper.
- Come on, Munchy, not only do they have the best coasters,
they have the best mascot, Benny the Bunny.
- Just give me another chance to think of a better idea.
Milkshakes, drink, table, coaster.
Coaster World.
Dang it!
[upbeat music]
- I love Coaster World.
Yesley Day just keeps getting better.
- Well, everything's better when you win
Benny the Bunny hats and Benny the Bunny.
- Well, I'm happy I won this bottle of soda.
- That wasn't a game. That was a concessions stand.
- A win is a win.
Plus, this is the only place you can buy Sploda Soda,
the world's most explosive soda.
It's 100 times more carbonated than normal.
One sip of this, you can burp the entire Gettysburg Address.
- There it is, the Grim Weeper.
And no line. Let's go on.
- Whoa, whoa, whoa, whoa, whoa.
Where do you think you're going?
- On the Grim Weeper roller coaster.
- Oh. No, you're not.
This baby was just built,
and we need to test it with dummies
before humans can ride it safely.
- But we really want to go on, and it's Yesley Day.
- Huh.
Never heard of Yesley Day, and I'm a holiday expert.
- It's a day where we say yes to everything she says,
and she wants to go on the coaster, so...
say yes?
- I guess that would give me more time
to hang out with the dummies.
Oh, what, you can make up a holiday,
but I can't spend quality time with my dummies?
- Hang out with as many dummies as you want.
We'll try out the ride.
all: Please?
- Happy Yesley Day.
[all screaming]
- This is incredible!
- Hey, it's not so bad.
- We're coming to the big loop!
[metal squealing]
- Why are we stopping?
- Uh-oh.
[metal clunks]
all: No!
- Guys, remember what day it is.
all: Yes!