Before the Voting Rights Act, White poll workers would give Black voters bullshit tests that they would have to pass in order to vote. Of course, the poll workers could decide who passed, however they wanted, regardless of what the voter put on the test.
In this
Daily episode about John Lewis's life, some examples of questions from those tests are given. "How many bubbles are in a bar of soap?" "How many judges are there in Alabama?"
These bear a striking similarity to the classic bullshit Microsoft "brain-teaser" interview questions.