Looking for recommendations on pumps to get, preferably hand pumps, for beginners trying out air inflation for the first time.

I regularly inflate with water and can get pretty big but I've never tried air. Lately I've been getting back into inflation but found that I'm not able to inflate with water as much as I'd like to due to needing a lil privacy and time in the bathroom.

I'm also extremely curious about air inflation and so far my only experience with it has been swallowing air. The closest I've ever got to anal air inflation was years ago when I contemplated sticking the hose of the family bike pump up my butt but I never had the guts to go through with it.

Was wondering what kind of pump would be the best to start with. I like the idea of ball pumps but I honestly don't know much about them or if they're any good for inflation. I've also thought about buying a USB aquarium pump but I don't think I'm ready yet for anything automatic. I'd rather have something simple and easily controllable and can be concealed fairly easily.

I just wanna be a big balloon.