The poopypants copypasta is one of the many phrases used by poopypants, a user who used alts to raid multiple Repl.it-related Discord servers, including the Repldex Discord and the Repl.it Discord itself.
The poopypants copypasta, which was used only during his brief raid on the official Repl.it Discord, is as follows:
@everyone @mat
you may ban me but I will be back, I promise you. - poopypant
He was swiftly banned by Nayoar.
They have targeted Repldex discord, Repl.it Mobile discord, and tried to target the Community Server but failed miserably. Currently on the third wave of raids, not including the Repl Talk raid.