I once lived next to a concreter who was a pretty rough bloke generally but had two obsessions. One was his lawn and the other was his indoor tropical aquarium.
He used a hand pushed rotary drum mower on his lawn. Not common but not weird either. He then got down on his knees and used a pair of 6 inch (150mm) craft scissors to do the edges. This was a 1/2 acre (2000 sq.m) house block with extensive paving and edging. That's some hard core lawn love.
The aquarium obsession stopped when his wife decided to clean the tank when he was working away for a couple of weeks. She'd watched him do it many times, easy peasy. Suffice to say using bleach to remove mould was never part of his cleaning process. He got home to some expensive floating fish and a shocked wife.