Chunker

I love fat people. Chubby-chasing is my hobby. I enjoy nothing more than waving a vanilla slice under some chunker's nose, tying it to my bumper bar with a string of jelly snakes then driving round the block at gelati-van pace

Source: wiktionary

Double-breasted on a chunker can sometimes be a really sad look, but on me this thing is L'uomo Vogue!

Source: wiktionary