I like the high waist - not necessarily in jeans bit in dressier pants. It is that 1940's style that I love. It is actually more comfotable than low waist pants that have been known to cause nerve damage because of locationof the waistline. Ahhh, the things we do for fashion.
A muffin top refers to the layer of blubber that hangs over too-low or too tight jeans.
There's even a Wiki entry!