Comes from the word rat which is a racial slur used against Asians. Kpop stans are hypocrites and racists because they would call BTS fans 'ratmys' when they stan Asians themselves.
Kpop stans: Look at those ratmys listening to BTS's music.

ARMYs: You do know it comes from a racial slur right?

Kpop stans: We don't care

ARMYs: We feel sorry for your faves for having such a racist fandom.
by BabyBlueDreams April 21, 2018
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The name given to toxic BTS’s stans who think everything evolves around those 7 gays.
Kpop was once peaceful until BTS & Ratmy existed. Then, Kpop becomes toxic.
by Jisooslut May 7, 2022
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