Gut loading feeder mice?

[200xth]

I'm new ball pythons so I'm not sure if this is a thing, but with insects (crickets specifically) you can "gut load" them so they have more to offer for your insectivores. Would it be possible to gut load a rat/mouse so the snake could get more food in it? How would you go about doing this, just feed the mice lots of whole milk?

Would this help fight off an RI faster?
Would this help fatten a skinny snake up?

Unless you're feeding it very low quality feeders in very poor health it's probably not going to do much.