Don't moms-to-be have it hard enough?
Just dealing with the hormones & the belly pressing on the bladder, and not fitting into the driver's seat of the car, and having to buy a wardrobe full of elastic, and not being able to sleep on your stomach, and ... well, you get the picture.
So making fun of that beautiful resting place for a future awesome human being, is just not right. Unless you're already the child of said mom-to-be, and you're under the age of 2, like the toddler in this video. He just might have a future as a comedian!