Or, As Much So As Danny DeVito and Arnold Schwarzenegger

Guy: My sister and I are twins, but I was born first.
Woman #1: Do you mean you just came out first?
Guy: Well, see, what happened was I am two years older than my sister. [Everyone stares at each other.]Woman #2: … So you and your sister are twins, but she is two years younger?
Guy: Oh, wait, I’m getting confused with another family story. I am two years older than my sister, but I’m pretty sure we’re not twins, either.

900 West Valley Road
Wayne, Pennsylvania