Shitty degenerates who mostly strive to attack people, usually a big group of shitty friends but they're now expanding their awful, awful pack.
They originate from G+, and aren't as special anymore.
Jesse: Aren't you glad that James of the shroomboy's got suspended? If only it was permanent..
Hannah: Yeah, he's pretty gay, dude. He doesn't deserve the respect he gets.
by KONC January 8, 2018
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People who witchhunt/attack people for attention.
Also know as the Team 10 of Google.
Shroomboys usually a mushroom at the top of their profile picture.
James:Ew, did you see that shroomboy on Twitter?
Fred:Yeah, he was such a dick.
by Callthefeds January 7, 2018
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A name most associated with a group full of underage autists on Google+. The group's main strategy of attention includes:
Editing mushroom heads onto their profiles
Calling people FATASS
leaking nudes of a 17-year-old girl
Utilizing child pornography as a form of sabotage to terminate someone's account
Threatening battery upon pregnant individuals

Watching the child porn as previously mentioned
Threatening to commit suicide after being sent a dick pic
Still use FATASS after the group dies out gradually
Turn on each other if they refuse to post child porn
Did I mention fatass and child porn yet?
Bully everyone on one site and still receive praise for their "humor" or lack there of
James: Hey, do you wanna join the Shroomboys?
Leonard: What the hell is a shroomboy?
James: We're memers and raiders. You might know the Bees Kne-
Leonard: First off, I hate Alex. Secondly, If that's how you describe them, I assume you're all faggots. Get the fuck off of my profile.
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Scumbags of the internet.

they claim to be nice and play the victim when called out.
These creatures attack and bully anyone who opposes them.
They can be found lurking on Google +
by Callthefeds January 8, 2018
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Shroomboys are a family. They just hang out and do whatever they want, but if someone fucks with them, that someone gets fucked with, and hard. Shroomboys are typically seen wearing mushroom hats.
Jeremey: Hey, is that guy a shroomboy?
Jack: Him? Yeah, you can tell by hit mushroom hat.
by Jelli0 January 7, 2018
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An insult that is synonymous with soyboy, virgin, incel, nolifer, basement dweller, etc

To be referred to as a "shroomboy" is to be implied as one or all of these synonyms. It also implies that the jizz sock you use has literal mushrooms growing on it, and perhaps even on yourself, because of how much of a disgusting individual you are.
Riley: Bruh, what's a shroomboy?
Huey: Scummy, fungus ass mufuckas that even 4chan anon niggas don't fuck with.
by Balder Ensamvarg July 3, 2018
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A member of a shitty cult on Google+. The group consists of 11 years olds who have nothing else better to do in their lives than harass other people. Contradicting the popular belief, the shroomboys have been around for longer than a few days. The only reason they were noticed because they decided they wanted to be professional assholes in 2018.
Carl: Is he a shroomboy?
Ryan: Yeah, look at his profile picture. He has that red mushroom hat on.
by A Frying Pan January 9, 2018
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