When you either listen to a song, watch a movie or t.v. show, or read, say,...a script SO MANY TIMES OVER AND OVER AND OVER AGAIN that you don't have to be watching/listening/reading it to remember what it says.
Seagull - "Did you memorize your lines for the recording of the movie?"
The practice of using memes on social media to "prove" one's point and to belittle those who disagree with the point being made and/or to criticize public figures. Memonizing extends to the use of "news articles" which are more opinion than fact and that have click-bait titles, ones which are used to get people to open the articleβs link and typically discover the article (usually an opinion piece, not a news story) often offers different information than the title implies.