In the last year I started noticing on Reddit people typing the ‘letter’-word and half the time I wouldn’t know what word they are referring to.
On a couple occasions I would reply asking what word they meant and they would reply that I should know, with my comment downvoted.
That reminds me of another thing I was sick of seeing, people asking a question and getting told to google it or that lmgtfy link. You would later see people in the comments mentioning that Google took them there when Googling for it.