hammerhead
n.— «Erik again let me get away, but not before we both got called hammerheads for plowing up one of the hairpins as we passed a big pack. “Hammerhead back!…. Another hammerhead back!”» —“Re: Death Ride, or ‘Where I Died On My Summer Vacation’” by Bill Knowlin Usenet: rec.bicycles.rides July 22, 1993. (source: Double-Tongued Dictionary)
Further reading
What’s it like to hike the Pacific Crest Trail all the way from Mexico to Canada? You’ll end up with sore muscles and blisters, and great stories to tell. Along the way, you’ll also pick up some slang, like NoBo, SoBo, Yo-yo and...
The slang phrase someone ate and left no crumbs means the person did something really well. In a previous call, a listener who works in theater noted the use of ate to mean “did something well,” as in they really ate that haircut! This...