A term generally used by twitter (or other social media) gay men to define the act of accidentally posting photos of their anus on their main social media- or more generally nudes on their public social media profiles, instead of their alternate media profiles which are usually specifically for the purpose of sharing nudes.
Accidentally postedHole on main yesterday, so many new follows now
Similar to drain the main vain, however as we all know, cum is stored in the brain.
Timmy: “Hey Billy, what were you doing in the toilet last night? Sounded like you were role playing a rapidly declining dragon trying to climb a jagged rock!”
Billy: “ah sorry about that, had to drain the main brain”
Timmy: “lucky bastard!”
a slang term for outing your alternate account by making a post with it that was clearly intended to be from your main persona but you forgot to switch back first. See Horny on Main.
OMG! She went Sockpuppet on Main? Is there even an Urban Dictionary entry for that? (shameless plug)