The DDLC copypasta originated from the Eggman’s Announcement copypasta that was based on an old Sonic meme video.
Natsuki: “ive come to make an announcement, Yuri Doki Doki is a bitchass motherfucker, she pissed on that fucking poem, thats right, she took her sticky fuckin creepy pen out, and pissed on that fucking poem. And she said it was “this yellow” and i said “thats disgusting” so im making a callout piece on the tsundere paper. Yuri Doki Doki, youve got a small poem. Its the size of this wallnut except way smaller. And guess what? This is what my poem looks like. Thats right baby, all poem, no fried squid, no gentle door openings, look at that, it looks like two manga and a literature. She stabbed herself, so guess what? IM GONNA STAB THE CLUB. Thats right, thats what you get: MY SUPER LASER POEM!! Except my dad is not gonna beat me, he’s gonna go higher, HES BEATING THE MOON! How do you like that Monika? HE BEAT THE MOON, YOU IDIOT! you have 23 hours before the piss DRRRRROPLLLLLLETS hit the poem, now get out of my sight before she pisses on you tooI've come to make an announcement. Yuri is a psychotic yandere wannabe! She pissed on her poem! That's right, she shoved it right into my hands with blood stains, piss marks and everything. She said she loved me THIS MUCH.
And I said "that's disgusting!" So I'm making a callout post on my twitter dot com. Yuri, your love for me is totally lust. It's like Claude Frollo's relationship with Esmeralda except WAY more lustful. And guess what, here's what true romantic poetry looks like:
That's right! All passion, no profanities, no manipulation. Look at it, it's marital love and full commitment!
She contaminated my skin so guess what, I'm decontaminating this club. That's right this is what you get! MY ANTI-ROMANCE BLEACH! Except I'm not just cleansing the club. I'm gonna go higher. I'm cleansing the GAME SCRIPT!
How do you like THAT Monika? I removed all romance elements from the GAME SCRIPT, you yandere! You have 24 hours until the changes become permanent. Now get out of my sight, before I mess with your personalities too!