Even his name was weird, but I am not going to say, I will call him PS.
He was the pale one at the summer social in white top and shorts, black socks and shoes and a brown leather stetson.
Worked in a medical/academic place where it really was anything goes (one bloke used to commute a few miles in on a unicycle) but he stood out:
I was walking down the corridor at work, I heard PS talking to a medic colleague about a pain he had. I stopped, pretending to tie my shoelace so I could listen and heard the medic say, "Is it a sharp pain or a dull pain?". After an inordinate pause he said, "hmmmm, yes." Just like that. Medic looked startled and I scuttled away.
In the pub, office mate leaned across and said, "so P, Maths or Physics" (you know, he was the archetypal Maths/physics postgrad) and he did his pause and "hmmmmmm, Physics".
We were obssessed with him in our office. We used to keep a file on him. Reading this back, we were the weird ones weren't we?
Oh I miss the good old days in the asylum where I wasn't really a colleague but an inmate.