step on
v. phr.— «Heroin often is white powder heroin, which in many cases has been “stepped on,”” or cut, so many times that the “high” is weak.…“Black tar” heroin…not surprisingly looks like black tar and is harder to “step on.”» —“Huntington’s Heroin Habit” by Tony Seaton Huntington News (West Virginia) Jan. 25, 2008. (source: Double-Tongued Dictionary)
Further reading
Aubrey in Waco, Texas, says her mother used to warn the kids against contracting honkus of the bonkus, a fanciful name for a contagious disease. This colloquial term probably comes from the words bonk and konk, meaning “to hit” or...
Jacuzzi and silhouette are eponyms — that is, they derive from the names of people. An Italian immigrant to California invented the bubbly hot tub called a jacuzzi. And the word silhouette commemorates a penny-pinching treasury secretary who lasted...