Mini rant: unsolicited belly touching

Well, crossed another milestone today! And of course one you hope you never get to. A mom and her daughter (I'm pretty sure) shopping at my store got all handsy with my bump today. It was so weird! The daughter (late twenties at least) reached with a poking motion (?!) and said something about a baby (they were not native English speakers so I couldn't really tell what she said) I stepped back and was like "yup theres a baby in there" thinking that would settle things. She manages a poke, which is awkward as hell because I'm supposed to be helping them and can't really just walk away. Then the mom reaches out with her hand like to rub my belly and all I could think of to say was "I don't like that" and to step back again and put my arms folded over my stomach. She left her arm out as I repeated myself again less politely. Like seriously, when is it ever ok to poke or rub someone's stomach???

Gahd, I hope that never happens again!