If "it floats your boat "must have been a later expression, definitely not being used between these people whose job was to float and guide logs down river to treatment plants. Gondola in Venice? Try the river, babe.
Before alarm clocks, people were hired to wake you up using sticks or pebbles. They mustn't have been your friends, otherwise you ended up hating them, just as it happened to your fav songs that you set up as alarm clocks. Big mistake!
Before refrigerators, the handsome milkman came to bring you fresh milk everyday. Why did they have to be so charming? The lady seems very thrilled to see him, weren't they all...Rumour has it.
My favourite one: the Computer
The name is given after the human job, not the other way round. For...doing calculations, of course. Was "television" given after a human job too?
They seem like skating and having a nice time, but...Before modern refrigerators, we would need fresh ice, so someone had to do it in awful conditions. In 2015 we'd rather break the ice with a kiss.
Railroad workers who were known for their loud singing while maintaining and laying the tracks. Can you picture them singing Adele?
Following your master and reminding him of people's names and who they were. Human agenda. Those who don't remember people's names at parties should get one now. I propose we all sign a petition to get this job back.
Before broadcast news, these guys were yelling everything that needed to be heard, anything important. Street corner presence required! My neighbour still shouts when he has something to say, unfortunately not important.
Before machines, leeches were needed in hospitals for bloodletting. Picking up flowers sounds more appealing than picking up leeches, girls!