The phrase your mom gay grew out of early internet and schoolyard humor, where deliberately weak your mom jokes were posted ironically as the ultimate comeback. Online, the elongated version became a standalone soundboard staple, shared in Discord calls, gaming lobbies and short meme edits precisely because it needs no setup or context. Its popularity comes from that anti humor, replying to any argument or mistake with a childish non answer, and it continues to circulate as a quick audio shorthand for a playful roast among friends.