Edward Kimmel (https://en.wikipedia.org/wiki/en:Creative_Commons) via Wikipedia Commons
Trump dubbed Pete Buttigieg "Alfred E. Neuman", the famous mascot from "MAD" magazine, the problem is Buttigieg did not know who or what that was. "MAD" magazine took the opportunity to slam Buttigieg in this epic tweet:
Who’s Pete Buttigieg? Must be a generational thing.