Trampeading: what occurs when a stampeading force tramples over something. I accidentally coined this term several years ago to describe the actions of two of my housemates when they both discovered they had a crush on the same girl.

About a month ago I coined a new term which I used to describe major corporations whose acronym names no longer mean anything (i.e. HSBC or BP). Imagine my dismay when I found out I'd been beaten to the punch.