Gintama has some of the funnier versions of those notes. Can be annoying if you don't care as they take it to 11 covering most of the screen to explain a reference to a bank scandal in the 90s or other very specific stuff. Cracks me up with the level of care about making sure you are aware of something used in a quick joke that might not really matter. Such a nice way to see and know random info on Japanese slang words and phrases in the context of a moment.