You are all probably going to laugh, but I have recently been having my first experiences with muffin top! I know, I don't know why I didn't get it before, when I was heavier. I think it's because the bulk of my weight was below my waistline, and so the size I wore to fit that effectively was able to include the weight around my middle too. But now my dupa is so much smaller and therefore my pants are too, and really the only excess inches left are around my waist/belly.
Thus, muffin top. It was the STRANGEST experience to realize what it was; I was in the car driving, wearing well-fitted jeans and a volume top and I felt this strange roll of skin pressing against my elbow. "Why is it hanging over my waistband?" I wondered. "I don't feel this much extra skin when I am standing up, or see it in the mirror...why is bulging out like this?" Then the penny dropped, and I literally started cracking up at myself!
So, what to do (besides more crunches)? Should I be wearing a different fit for my pants? Am I buying pants that are too small? I literally have NEVER had this happen before!