Oozing gunk is a term used to describe a thick, slimy substance that is often found in nature. The term can also be used to describe a sticky, viscous material that is produced by certain organisms. GOO is an acronym for 'Gelatinous Organic Osmotic', which is a type of ooze that is created by some bacteria and fungi. This type of ooze is often found in soil, water, and other moist environments.