Meaning someone is extremely gay (Not really it's an insult.) But they are so much more gay then normal (only use if the person is toxic) You wouldn't want to upset someone by saying they were a Bigger' FGay

F standing for fucking. BiggerFuckingGay use Bigger with an (') if you're going to say FGay.

can also be said like "FGay" "primarily used in Fortnite, Roblox and Minecraft. You might want to leave or expose them or something after saying this if they are better then you because they will destroy your life."
Kid:Hey dude I bet u have no aim cause u get no girls

Memer:stfu FGay

Kid:What did you just call me skrub? (proceeds to rekt him for 2 hours)

New kid:You're both Bigger' FGay's

kid:stfu BIGGER' FAGGOTGaY
memer:YE stfu before we hack ur minecraft account.
by Roboblox November 8, 2019
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