One delight that seems to have become endemic is the following:-
Say a company has a deal where they are selling something for half price, if you buy two.
This often was advertised as "Buy one, get one free!", which is silly in itself, but recently has been replaced by the totally nonsensical "Buy one, get one!", which makes me want to say, "Well, duhh, If I didn't get one, I'd stop payment!"