Incestry Dot Com?

Have you seen that Ancestry.com commercial where a blonde babe says of her husband,

"I thought I married... an Italian".

A little bit farther into the commercial, she says,

"So I went onto Ancestry and soon learned that one of our ancestors we thought was Italian, was Eastern European!"

Wait a minute! Our ancestors??  Not his ancestors??? How in the world did they have the same ancestor? Cousins?  Brother and sister?? I guess the family that sleeps together has peeps together?

My ex can trace her genealogy (and that of our kids) back to Buffalo Bill,  but it would never, ever occur to me to say that Buffalo Bill was our ancestor! Personal pronouns are our friends!