Office I was working in last year had somebody who seemed to be afraid of touching a toilet seat with their bottom. I'd occasionally go into the toilets and find a stall where somebody had basically used about half a roll of toilet paper to cover the toilet seat.
It was incredibly weird, must take ages to do and then they just leave it like that afterwards.
I had this when I went to the loo at Macro once! Someone must have spent ages making their loo seat protector

.