Starting approximately in March 2017, reaction memes about the jar gained particular popularity on iFunny (examples shown below).

Starting approximately in 2014, the screenshot of cooldudebros' Tumblr post of the Pony Cum Jar Project was widely circulated online. On January 9th, 2017, the user announced that he had tansfered the Rainbow Dash figurine and the rest of the jar contents into another, more compact jar, also providing a video documenting the process (post shown below, right). For example, on February 6th, 2016, the user revealed that he was employing a separate jar for ejaculation and pouring the product into the original one (shown below, left). In the following years, the user behind the project made more follow-up posts on the projects. This included posts by Horse News, Jezebel, Buzzfeed and Gawker. In the following days, the story was widely circulated online, with multiple blogs and news outlets reporting on the thread. The post received over 21,700 likes and reblogs in five years. On November 30th, 2014, Tumblr user cooldudebro posted the photograph of the jar from the November 27th thread, quoting the post (shown below). In 2018 Jizzus Christ admitted that the posts were fake. The Pony Cum Jar Project was presumably inspired by Jizzus Christ, an anonymous 4chan user who, starting in 2007, posted annual photos in which he showed his alleged collection of semen he'd ejaculated from the previous year. And for comparison I have also got another glass of cum that's about a week old. So basically the Rainbow Dash figure has been boiled in cum. The place where I was hiding my cum jar were actually on top of a kind of radiator, that was connected to our furnace, and of course since it's getting colder we light it up.

I come before you today to reveal a horrible accident to the Pony Cum Jar Project. On November 11th, 2014, the user a photograph which revealed that the contents of the jar have been boiled after he accidentally left the jar upon a working radiator (thread shown below). In the post, the user described the jar and its contents as 'pony cum jar project.' In the following months, the user posted progress pictures of the project to /mlp/ board (example shown below, right image not archived). On April 1st, 2014, an anonymous 4chan user posted a photograph of a glass jar containing a figuring of My Little Pony character Rainbow Dash, with the jar also containing a small amount of human sperm (shown below, left image not archived).

4chan fat pony thread archive