The stuff that's not really fat and not really muscle, usually found in a roll around the midsection where the "rock hard abs" would be located if the "rock hard abs" existed. Pudge does not jiggle of its own accord, but is pokeable. Pudge is usually found on girls of medium size without too much mucle mass.
Often made worse by wearing skinny jeans or belly shirts, during which time it can be confused with a muffin top.
Suzy: I hate these jeans! They fit me great, but they give me such bad pudge!
Suzy: Yeah. You know, the stuff on your stomach that's like ... not really fat.