Toilets
I like using the visitors toilet. It is an enclosed room, with a sink and walls and stuff. I appreciate the privacy this provides.
There are, however, two problems. Firstly, it's not obvious from the outside that it's a single toilet, and it would appear to the uneducated eye that it may be a normal multi-unit toilet facility. In addition, the lock is not too strong. This results in occasions where the door is tried, the potential user thinks the door is just stiff and tries harder , at which point the lock gives way and the door swings open revealing you in full Greyfriar's action glory.
There is a story related to this, involving a gentleman who was in full pud-pulling action as the door was forced open, and proceeded to pull his top over his head to hide his face. This is known as the 'Ravanelli Incident'.
The second thing is that it's always busy.
The other toilets are more open plan, in the normal urinal and cubical fashion. This results in the Urinal etiquette that has been described below. It also has another down point in that you have to walk the full length of the office, past a whole bundle of people who could potentially track your toilet habits. It also has the loudest doors on the planet. They are on the usual fire door things that make sure they close after use. They're also loose fitting, so the wood hits against the frame. Very hard, and loud. This has the effect of making you jump, which is not a good idea when you're on the job.
I like my own toilet. I like being in my own house, alone, when I go to drop off the kids. I like to sit till my bum is numb and my legs are like jelly.