I've come up with some new variations of inflation, which was inspired by none other than this Daffy Duck cartoon.
The first I'll call Pump Inflation, which is where the inflatee's body inflates and deflates rapidly, gradually growing bigger with each inflation.
The second I'll call Random Inflation, in which a part of a person's body, for example the breasts, swell up for a time, then deflate a short while later.