post-microwave
The opposite of pre-microwave. Used to describe the twenty-somethings in the workforce who think they've seen and done it all.
"Oh, I've been using Microsoft Word since high school. I'm an old computer user."
"I was using Microsoft Word when you were still in diapers! You are so post-microwave!"
"I was using Microsoft Word when you were still in diapers! You are so post-microwave!"