The layer of flabiness that protrudes over jeans that are 4 sizes too small. Often combined with a top 4 sizes too short. Generally met with disgust from onlookers.
When someone makes you happy. you, being the eggroll, are good on your own, but when someone butters you, you become better. Or when something/one is very pleasant to be around, they are like buttered eggrolls.