Hello Mal
Sounds like a funny guy but not sure he is a perfectionist. Washing hands a thousand times and checking fruit and food a lot before eating is not about being a perfectionist - more that having a phobia for bacteria or dirt. This behavior is very common and sometimes it goes to extreme content. I know a guy who will not sit on a toilet, no - he is not a muslim, Turk or arab. He literally stands on top of the toilet ring to do his.... well you know.
Not only that, he brings his own filter for the faucet and tools to replace it. You know where the water comes out from the blender there is a little grid filter on the faucet blender that would filter out any dirt which may come with the water line. Well, wherever he goes he brings his own. One for work and then a collection of filters that due to different threads sizes and thread steps or NPTF or G-thread fits where he goes. My guess is he walks around with a small moneky-wrench and 10 faucet filters in his pockets at all times. This is a sad thing - he is probably very sick.
Your friend also have a usage of big words in all moments. I think that sometime in his life he did not get the attention he needed from people around him. In order to get the attention he started using special words that noone would understand or have to look up. This in order to seem more important then people around him seen him as. Now, when using these words for a while he did get attention, he got used to it and his subconcience do not want him to go back to the non-attention so he keeps having the same "big words" behavior.
For me a perfectionist is someone who wants his home and work-place in perfect order. It is not so much about cleaning ness for bacteria but more for the impression both for him or herself and also about what others would think if they seen his/her home in "bad" condition. It is about having things in order, like all the towels, sheets and shirts are folded the same way, in the same position with perfect edges. It is about having constant clean windows, it is about having a nice garden instead of a messy one, it is about always having a clean car. Or even, wash the car to put in the garage to leave for work on a bicycle so you do not have to wash the car again. Not leaving things about, when washed the car the bucket must be cleaned out and dried, the water hose must be perfectly wound up and stored in it's designated place. While washing the car one must also wax it, dry it with skin and clean it on the inside - not to forget to wet-dry all the hidden corners and edges that can only be seen when the doors ajar.
Having order on the office desk is also important, having order on all files in the computer is also important.
Clothing is important to always be not only clean but perfectly ironed, I know several perfectionist that actually iron both socks and underwear. A few times a year they iron through their whole closet on the clothes they do not use so often.