chunky trunks Share definition Flag One who is fatter that all get up. Usually referring to a fat man with a fat ass that is built like a woman. Jesus chunky trunks, why don't you have another cinnabun you fat fuck. chunky trunks by mroffensive December 31, 2007 0 0 Get merch Get the chunky trunks mug. Buy Now — $32.95 See more merch