Describes baggy clothing of a pea green or khaki color that doesn't fit correctly. So big you're "swimming" in it. Usually used to describe a shirt or sweater.
When you shotgun the same bong hit back and forth. So named because the hit feels like shit, and you are (two girls one cup style) vomiting it back and forth. The vomit feels like chunky soup. Thus, you're keeping it soupy.