hammerhead
n.— «National competitions have developed since the first “hammerhead,” a self-descriptive term used among hardcore bikers, plunged downhill on a ski slope.» —“Mountain bikers are taking the plunge in the Carrabassett Valley” by Brian Swartz Bangor Daily News (Maine) June 15, 1995. (source: Double-Tongued Dictionary)
Further reading
To be creasing, or to be creased up, means you’re laughing so hard you’re doubled over at the waist, as if your belly has a big crease in it. This is part of a complete episode. Transcript of ““Creasing” and “Creased Up”: Laughing So Hard You...
Kinbank is a new database that illustrates the global diversity of family terms. English, for example, specifies sibling relationships with just one of two terms: sister or brother. But most other languages have even more specific terms. In...