[orange, looking weary, while pink looks on] Mate… Why would you say you’re hetero, the person you’re dating used to be a dude, that makes you gay
[green, holding hands with pinkblue] The person you’re dating used to be a kid, so… you’re a pedophile?
[orange looks pissed]
[green shrugs smugly]
The transphobic argument isn’t that you’d be gay for dating someone who used to be a dude, in their view you’re currently dating someone who still is a dude.
These kinds of imaginary clapbacks are fun but usually end up fairly unconvincing to (transphobic) people.
This is what you say to a transphobic person to figure out if they are going to shut up on their own or if they need to be shut up.
First you would have them to admit that trans or gay people are even people.