Waterguy12
Waterguy12 is the Reddit username of a user who kicked off a two-week r/me_irl tagging saga in July 2017 by asking the subreddit to tag him on good memes while he was without WiFi. The bit snowballed into a mock war with an account called FireGuy12 and got a smaller sequel in June 2019.
Overview
Waterguy12 is the Reddit username of a user who accidentally spawned one of r/me_irl's most-remembered sagas in the summer of 20171. Before leaving for two weeks without internet, he asked the subreddit to tag him in any good memes so he wouldn't miss out1. The tag flood that followed pulled in a rival account called FireGuy12 and turned into a mock war fought with water and fire emojis3.
The bit is remembered less for a single image and more as a community in-jokes event, where users spun up dozens of accounts following a "SomethingGuy12" naming pattern to pick sides in the fake fight3. A second departure in June 2019 kicked off a smaller sequel round of the same tagging bit1.
How It Spread
How to Use This Meme
The convention is to reply to a strong meme on r/me_irl by tagging /u/waterguy12 in the comments, often paired with water emojis or a jab at FireGuy121. Newer versions of the joke typically frame the tag as 'saving' a meme for someone who is offline, then get answered by other users tagging back with the SomethingGuy12 format3.