bag nasty
n.— «Did he ever eat bag nasties? (Slang for MRE’s—Meals Ready To Eat—K Rats of the future, in plastic pouches.)» —“Re: He doesn’t know jack-shit” by Karen Schneider Usenet: alt.usage.english Oct. 28, 1992. (source: Double-Tongued Dictionary)
Further reading
Language is always evolving, and that’s also true for American Sign Language. A century ago, the sign for “telephone” was one fist below your mouth and the other at your ear, as if you’re holding an old-fashioned candlestick...
Brittany in Green Coast Springs, Florida, says that when she was grumpy or irritated as a child, her mother would say a phrase that sounded like Don’t be such a scooch. This bit of Italian-American slang, often rendered as skutch, denotes a “pest”...