How can you tell if a post on r/Jokes is unoriginal?

It makes the front page.

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Tell Jokes More Tell Jokes

What do you call a hydrocarbon that tells fart jokes?

Crude Oil.

Why should you never mention the number 288?

Because it's two gross! (A gross is a measurement unit for "144". So 2 * 144 = 288. Or "two gross".)

Post Jokes More Post Jokes

What material does Cayde-6 use to repair his armor after falling feet first into hell?

Nathan Filaments ( ) X-Post from /r/DestinyTheGame

How do you keep someone curious?

I'll tell you on my next post

Page Jokes More Page Jokes

Where is the best place in a book store to find a man who is handsome a good lover and a stimulating partner?

A. In the pages of a romance novel.

My older brother always tore the last pages of my comic books, and never told me why.

I had to draw my own conclusions.

Rjoke Jokes More Rjoke Jokes

Why are you on /r/Jokes?

What arrr ya buncha pirates or sumthin?

How do you search and identify for feminist jokes in /r/jokes?

They have a "JOKE" disclaimer tag