Aren’t you tired of being nice? refers to a copypasta, which appears frequently on message boards and image macros.
The original phrase comes from a Yahoo! Answers question, which read “Are you tired of being nice? Don’t you just want to go ape shitt”.
The copypasta was first posted on Yahoo! Answers by an anonymous user on April 6th, 2018.
It was reposted on Tumblr the following day, by user-1892, being the first of many Tumblr post, containing the phrase.
“Aren’t you tired of being nice?” would spread to Twitter and Reddit by December, 2018, marking the beginning of the phrase appearing on image macros.
YouTube videos would also emerge in 2019, as the meme would approach its peak popularity in November.