a billion dollars 

What's cool.

You know what's cooler than a million dollars?

A billion dollars.

a billion dollars by SpruceBringsteen October 18, 2010

10 Billion Percent 

used to express when someone has faith completely in something, someone, etc. Originates from Dr. Stone

"Do you think he cheated on the test?"
"Oh 10 billion percent!"

10 Billion Percent by just some intelligent weeb :3 April 1, 2019

One in seven billion 

A better way to say "one in a million" because there is around seven billion people in the world and you believe that he/she is the one for you.

May: How much do you really love me?
John: I love you very much?
May: Do you think I am your one in a million?
John: No, you're my one in seven billion. Will you marry me? -shows ring-
May: Yes!
Then they got married and had kids.

One in seven billion by World of Wordcraft April 18, 2016

Ten Billion Humand Second Century 

A unit describing how improbable a thing is, defined by Matt Parker. If a ten billion humans would do something every second, none stop for a century, it will happen 3.15×10^19. Based on that, you can be sure that if the probability of something is worse than a Ten Billion Humand Second Century, its not gonna happen.

"If i keep trying, i can eventually get a hollow knight speed run where every enemy give me essence, right?"
"Thats can't happen is Ten Billion Humand Second Century, thats not gonna happen. Unless you gonna use a mod to get some dream luck..."

Ten Billion Humand Second Century by MazerT November 6, 2021

The University of a Billion Chinese 

a reference to the fact that the majority of students in Canada's Universty of British Columbia are Chinese

"That's strange, almost everyone here is Chinese. No wonder why it's the University of a Billion Chinese."

The University of a Billion Chinese by iZ41 April 22, 2018

Go-Billion 

A very large number used to tower a billion.

I don't know what to say Kim, there are a go-billion things going through my head.

Go-Billion by BeardofWisdom July 24, 2015

A million billion 

The biggest number ever. Not even infinity plus one reaches its magnitude.

Dustin: I drank so much beer last night, I think I set a new world record.
David: How much did you have?
Dustin: A million billion.
Andrew: You had five you dumb shit.

A million billion by Paul da Wall November 26, 2007