The Way of the Dusty Shelf

I was hiding in the Library today, in accordance with the teachings of the Ninjitsu on The Way Of The Avoiding Of Taking Minutes At The Staff Forum.

While skulking behind a bust of Norman Wisdom (don't ask). I trod on a hidden button on the floor. A small panel opened behind me, revealing a tiny cupboard. I had discovered one of the Order's many hidden storage areas. These are used for hiding secret equipment, incriminating evidence, documents and - sometimes - people.

I knew that a silent alarm would have been triggered somewhere and that I would be in major trouble if caught.

But before I fled, a scrap of paper tucked in the corner caught my eye. It had a crest at the top with words underneath giving an address in the UK. It looked like "No. 11 Downey Street".

However, it was this phrase that caught my eye:  "Waiting is frustrating but I find solace in the fact that there has not been a day since 1994 when he has not unwittingly drunk my urine in his coffee."

Whatever can it mean?