Not to brag or anything, but I'm from a very wealthy family. I think my girlfriend is probably a gold digger.
That's one big assumption. How long has she been your girlfriend??
A very long time, haven't you met my sex doll.
Ha, ha.  You know, some people would not find your joke funny.  Some people find sex dolls offensive,
You know what, why does everyone keep judging me! She is a real person and I love her!
If we're really talking about a human being, then I'd suggest you stop calling her that. A lot of people would find that very offensive, and think you're a pig for saying it. Find a more benign pet name for her.