Reminds me of an article in one of the papers years ago.
A court case in Glasgow where two young me had been involved in a fight.
One of them explained that he'd gone to his mate's house to get a "tap". The judge intervened to ask if one of the accused was a plumber and was suppling the other with this "tap" for a plumbing job.
The QC representing one of the accused explained to the judge that a "tap" was a term used by locals to define a loan.
The rather bemused judge then asked the accused if he did indeed mean a loan when using the word "tap".