I apologize in advance if this is some standard opener I've never heard of, I was just thinking about approaches the other day and this came up.

Me: Hey, I'm shane (get some contact in here with a handshake or something)
Her: [Name]
Me: Weird, I thought you looked more like a [other name]
her: [whatever she says after that]
Then at this point I just start jokingly calling her by the other name, teasing her with it, but further in the conversation when I want to talk about something serious I drop her real name to give it weight.

If for some reason she's stuck up I'd just go with

Me: You know in polite society we introduce ourselves when someone offers us their name.

If she still won't reply for some reason then she's probably too crazy for me anyway imo.

Any thoughts?

I like the way you're calling her by YOUR preffered name, playful. But, I wouldn't over do it once you've dropped it 2 or 3 times - it'll seem like you're boring by always using the same joke.

The second situation (in which case I assume bitch shield is up) would be too confrontational. I would go with:

"Well you're nameless. By the way you're wearing your [hair/earrings/top etc], i''ll call you Gertrude."

That way you get in a neg during your open.

Yeah, I wouldn't be trying to overdo it, 2 or 3 sounds about right. Besides, how often do you really call someone by their name in the middle of conversation anyway?

I like your suggestion for the silent girl way better than mine btw, pretty slick man, I'll have to use it.

If she's in a 2+ set, then you can call her by her name a few times in convo to her friends. (ie: Well, Gertrude here is clearly the odd one out..." etc)

Just remember if bitch shield is up, you must control the conversation quickly. An immediate neg should give you that opportunity.

Good luck!