In the 1990s, a series of Super Mario Bros. quiz cards were made. The questions were completely unrelated to Mario and dealt with topics much heavier than what the video games usually cover,

such as war, religion, and politics, complete with images of Mario and friends doing things related to the question, such as Luigi reading a book about the Nazis and Mario being a member of three different religions.

What Do You Mean, It's for Kids? - TV Tropes

"Mamma mia!! How are we-a gonna explain this one to the kiddies?!?"