I read this too when researching plastic surgery for myself. I was also picturing odd pockets of fat. Turns out, it's true but not in the bizzare way it sounds. So for me, I had a tummy tuck (after having had 5 babies - I deserved it! LOL) with a small amount of conturing lipo (as is pretty standard for the proceedure).
A couple years after the tummy tuck, I put on a little weight. As I did, I found that the areas which had had fat removed, stayed pretty much the same. So that added weight went to other parts of my body. So like, I used to have skinny arms, but now when my weight fluctuates up, my upper arms flesh out. And my thighs seem to want to absorb extra pounds. But my abdomen stays as flat as it can be.
Does that make sense? It's not that the fat is moving around or travelling to other areas or leaving odd shaped lumps in unusual places. It's just that any added fat is distributed (pretty evenly) to other areas of the body.
Now, if you had a ton of lipo and there was little left untouched, then you migh find fat depositing itself in unsual areas.