If someone I think is "high class" or just classy in general offers to brew some tea I'm expecting the loose leaf and a porcelain teapot to come out, and some science about the perfect steeping time for this particular blend.

If I'm in my trackies and slippers having a fag on the patio, and offer to brew tea for the tradie working on a roof, I'm pouring boiling hot water over a dusty 2 cent bag in a thick ass mug, and he knows it.