"Confession" was the equivalent of a Victorian England Facebook quiz that was popular in Marx's and Engel's circle. They'd fill out a questionnaire of their favorite things and pass them around to their friends. Marx and Engels had filled one out at some point in the 1860s, these were some answers I found funny from our modern perspective

Marx: https://www.marxists.org/archive/marx/works/1865/04/01.htm#
Engels: https://marxists.architexturez.net/archive/marx/works/1868/04/01.htm