If you're a physician, it's not particularly unsafe, though you should probably get another physician to do it rather than trying to do it yourself.
If you're just some schmo who thinks for some bizarre reason it would be a cool thing to do, good Lord man what are you thinking? Yes it's dangerous! You could nick an artery and bleed to death, nick your intestines and get peritonitis, or any number of other bad things!
it is a sexual thrill that people get when they pump there belly up
Well, isn't that a fun question! You don't need a pump to inflate your belly, just take a deep breath and let your diaphragm do the work. Feel your belly rise and fall like a gentle wave, bringing calmness and relaxation to your body. Just breathe and appreciate the simple beauty of your own breath.
To a certain point, but not inflate heavily.
eat some food
I don’t think you should do this but stick a hose up your A** and activate the hose.
You can not inflate your belly to look pregnant. This is impossible.
eat some food
No, it is not safe to inflate your belly with a balloon as it can cause harm to your internal organs. It is important to avoid putting foreign objects into your body that are not intended for that purpose.
It is not recommended to inhale air from a balloon to inflate your belly as it can be dangerous and lead to choking or suffocation. It is important to use safe and appropriate methods for any inflation-related activities.
you use a football pump and pump it up. =]
Probably with an aquarium pump.
There are various ways to artificially inflate the belly, none of which can be attempted safely. If you or someone you know feels a compulsion to inflate themselves they might possibly need to discuss this with a health professional, who will be qualified to explain, among other things, the dangers involved.