[kupiakos]

lesbian: woman who is attracted to women transgender: one whose gender identity does not match the sex they were assigned at birth

A transgender lesbian, therefore, is a transgender woman ("male-to-female") who is attracted to women.

[sergiotapia]

I didn't know this was really a thing, I've only heard of it on Mad TV when I was younger

https://www.youtube.com/watch?v=bgcLfohtFbE