Using jargon or slang is a way of expressing or demonstrating in-group solidarity, aye mate? Apparently sometimes the indications have been rather undisguised. Here's a report from The Quotable Musician (NY: Allworth Pr., 2003). The quotation is undated, but Hopkins, who sang the blues,...
• Dispose of a multiple use catheter when it becomes dry, brittle, or cloudy. This usually happens after you use the catheter for 1 week. • Take over-the-counter and prescription medicines only as told by your health care provider. ...