A mixture of mashed potatoes and saliva, usually encountered at dinnertime. Occasionally found outside of one's mouth, but only through the previous action of spitting it, perhaps at someone or something.
The gumpmash made a chomping noise between my jaws.
The state of an individual after an action by another has offended, alienated, or otherwised embarrassed the said individual. Examples include winning a hand in poker, defeating someone by a large margin in a fencing bout, and getting bitten by a pelican.