A more extreme form of chubby chasing. "Chubby Chasing" implies a fetish for those that are noticeably overweight, but not obese.. "Roll Patrolling" is a fetish for those that are grossly overweight, such as those that are morbidly obese or bigger.
M - I'm no longer a chubby chaser.
A - Really?!
M - Yep. I'm a full blown roll patroller now.