I hope this doesn't offend anyone I'm just curious about this. If someone says that they want to pump you up is it because they will find you sexier if you were overweight or is there a distinct difference between inflated and overweight?
If so what is the difference from your own perspective?
Also would you find that person sexiest during or after inflation?
The answer lies within the term overweight itself.
Assuming most of us are into air inflation, it's a weightless form of expansion which simply makes the inflatee balloon out, not actually put on weight and widen out like a fattening person would do. Overweight implies by itself extra weight, thus more stuffing/weight gain undertones.
Inflating with air implies rounding out and obtaining qualities of a balloon. The skin does not sag. It's stretched taut and tight, with the distinct rotund shape of - well - a ball. Weight gain, on the other hand, implies all these weight-related things and gravity being a beach by making all the fat'n'stuff sag down, unlike in the case of air.
Also to answer your last question, (assuming you're talking about the person as the inflatee) I do love myself the (pictured) goofy look on an expanding man's face as his belly slowly inflates like a balloon and the blimped dude just relishes in the moment, wanting to be bigger and bigger - until a big boom.
...I guess.
My username is stupid.
Better known as Poqato on the art scene.