I don't know why but there are some people who really get off on touching a pregnant woman's belly. They know no boundaries. They will touch your obviously pregnant belly without any concern for personal space. This happened to me, at work, all the time.
One guy, in particular, felt it was necessary to touch my belly any time he saw me. He would walk right up to me, his arm outstretched, and plant his open hand right on my person. Sometimes the hand landed on the top of my bump, sometimes it landed more towards the bottom of the bump which was way too close to an area that only my husband and gynecologist had any right to wander towards. It didn't matter how many times I pulled back, moved his hand away or outright told him to beat it...his hand was like a pregnant belly magnet.
Management knew he was doing this. Management thought it was funny...they thought it was cute. This was one of their "boy wonders" they had recruited to work in the office. You know, the "boy wonders" that are drop dead gorgeous and/or had played some type of high profile sport in college. The kind that move up through the ranks like a hot knife cutting into butter. Super smooth transitions into jobs that they were not qualified for or had experience in performing.
Those kind.
I still will never understand why someone feels they have the right to walk up to a pregnant woman and touch her belly without permission. I guess there is some twisted psycho-social need to touch something that is growing in another human.