What should you never say to a pregnant lady at the BART station?

"Go, go, go" while riding her back as she is trying to get on the train.

Expletives WILL be said and husbands WILL NOT take kindly to their pregnant wives being talked to like they are cattle.

I'd give the whole story, but I know my mom will have something to say about me keeping my mouth shut and so on and so forth, so I'll just leave it at that. Let's just say it's a good thing no one called the BART police because someone may have been cited. Or put in jail. I'm not quite sure how that works.