Oop... Well I'm not coming out anytime soon

So yesterday I was questioning on weather I should come out to my mom. My original plan is to come out when I'm out of the house and self sufficient but I was having thoughts of 'what if I did tho?' That was until this conversation.

Me: Showing my mom that my chest looks flatter "Mom look what I did."
Mother Dear: "What?"
Me: "I layered my old training bras to make myself a binder."

Mother: "You know that's what gay women do? Those women wanna be men so they can date girls."
Me: (ABORT ABORT ABORT!!!) "Oh... Well I'm just doing it make them smaller, I don't really like them."

Mother: "Well just don't do it around your grandmother and your aunt, they've already said some stupid shit about you potentially being gay and I don't want to deal with it again."
Me: "Yes ma'am." Goes back to room.

For context I've come out to my aunt but no-one else in my family. I'm pretty sure my grandma would be very supportive since my aunt came out to her as bi and she still loves her and doesn't give a shit, but my grandma is a gossip girlie and can't hold water.
In the past my grandma and my aunt were talking and my aunt and my grandma were suspecting that I was gay (this was before me coming out and they were very right), my mom shut the conversation down and got mad for a bit.

Anyway, I don't think I'm coming out to my parents anytime soon.