Yeah, I’m probably really behind the curve here, but here’s a British ad for Heinz Beans. I like that the transman seems confident, relaxed and happy, while the bio man’s head looks like it’s going to explode. His confusion and trans-related anxiety seems to be the butt of the joke more than anything. Your sex may change, but never your love for baked beans.
The transman’s self-ID as Christine rings false, though. Even though he says, “It’s Christine!”, it’s NOT Christine. It USED TO BE Christine. Now it’s whatever his current name is. If I were in that situation, I would say something like, “Hi, [FormerClassmate]! I’m [MyName]! We went to school together.” Then I would talk generally from that commonality and explain a bit later that I used to be [MyFormerName] if [FormerClassmate] was still confused about how he knew me.