A man or a women who is into larger partners. Usually searching for someone to hog down with and has a fuck-it attitude. A ChubbyChaser will generally preform oral on just about any rotten crotch because they be hungry. Often into spending others money and enjoying the free ride. Beware of their willingness to do just about anything and get away with it.
She/He must be a ChubbyChaser, that guy/gal must be loaded if they're sucking on that mid-range.
Tom is a chubby chaser, he only really wants heavy women. Andy, also a chubby chaser, is only into overweight guys. His sister shares these desires, so they love to go checking out guys together.