I see chainset as an abbreviation of a set of chainrings. Much better than crankset imo.
Chain gang: a group of ignoramuses who pass too close with pointy elbows and who grunt whilst peering down their collective noses at me.
Racing snake: Usually found in the above.
Roadie: As per racing snake.
Tail end Charlie: The poor bugger dragged along by his overbearing mate struggling up the hills and unable to hang on to the back.
Spandex:
Clarkson grumpy old git labelling
Lycra: Why? Just why? It's just clothing made for cycling.
Seatpin: It's a seat post in my book and always will be.
Audax, populaire, brevet, randonnee, randonneur, grimpeur, bidon, musette, decaleur, pannier, porteur, etc. All boringly pompous and pretentious.
Mamil: I've been riding a bicycle for over 40 years so why have I suddenly become a figure of ridicule? A moton inspired patronising putdown. See what I did there?
Clipless: Stupid as they generally do have a mechanical clipping in device. Strapless would I suppose sound a bit weirder though!
Aaaaargh! Stop me now please.