https://pawb.social/comment/16239373

First time I’ve heard someone say it but I speak 4chan vernacular so: “a jeep” -> AGP, “autogynophile”, an ironic way of describing (and delegitimizing) trans lesbians dating back to some shitbag psychiatrist who described trans people as self-fetishists

IDK whether that's true or not, but sounds plausible.