Oh yeah, back in 2009-2011 I spoke almost exclusively in web jargon. But then I saw a video about some schoolkids using the same terms and I realized, how cringey it looked, so I stopped. Also, I didn't want to be associated with cancerous schoolkids. Here's the reupload of the video, BTW: www.youtube.com/watch?v=cp3rGf…
In a job interview I dropped an insanity wolf quote on a manager, when he asked where I thought I would be in five years, I responded, “At your desk, with your job, boning your wife, wearing your face stapled over mine.”
He laughed, “You know I am getting a divorce, actually. You are hired, by the way.”
Once, without thinking and completely in earnest, I said, "Sweet cuppin' cakes!" (Homestar Runner reference) in front of two of my 40-something-year-old coworkers. I don't think they got it, though they laughed, which somewhat caught me off guard. See, it took me a couple of seconds to realize that that is not how non-Internet people talk.