Weight gain stories that instead of timeskipping from point A to B, they go from point A to B, C ,D ,E, etc. A slow escalation of weight gain, and the related habits (Escalating gas issues, steadily declining fitness, slow loss of control over appetite/eating habits, etc) that come from it rather than the fast progression most stories run with. Stories by Logitechk1 or STC9892 on DA, though if possible more detailed gas/slob aspects.