Belly inflation with warm water or Breast expansion with milk
My own cum!
She'd probably love that... To a point, anyway...
How many pieces of the gum would you give her?
2 so I know she would pop for sure lol but one could also be fun as the expansion would be slower so more time for fun till she blows
Definitely air xx
Nice From a tank? Or blow her up with a pump? Or just use your mouth like a balloon? :3
Other : PASTRY CREAM! make a cream puff out of her^^
Nice! Gonna bite into that cream puff? Lol
Air like a blimp
Juices from various fruits, turning her into a human fruit punch dispenser.
food partially, but that food would lead to gasses, so really she'd be filling herself at that point