Fanboy

What is a fanboy?

A dedicated male fan

A fanboy is a dedicated male fan who exhibits an intense passion and enthusiasm for a particular sports team, celebrity, movie franchise, or other pop culture phenomenon. You will often find fanboys surrounded by an extensive collection of memorabilia (jerseys, autographs, etc.), fully immersing themselves and showing unwavering loyalty. Some even take their devotion to the next level by dressing up in cosplay or costumes related to their interests.

The term "fanboy" gained popularity in the 2000s with the rise of blockbuster comic book movies (MCU and DCU), gaming culture, and social media. While fanboys are typically men, women can be equally devoted fans and are often referred to as "fangirls," together comprising a "fandom."

Example

did you see tom at the new superman premiere?
yeah, he's such a fanboy. he was wearing a complete costume!
The bedroom of an MCU fanboy
The bedroom of an MCU fanboy

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Updated December 4, 2025

Fanboy definition by Slang.net - The Slang Dictionary

This page explains what the slang term "Fanboy" means. The definition, example, and related terms listed above have been manually compiled and written by the Slang.net team.

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