Mom, who listened basically only to opera, would claim headache and ask us to turn off "that boom boom music" whenever her daughters would play anything even remotely resembling rock and roll. She would occasionally allow Dad to play bluegrass, and we were allowed to listed to folk, especially if the singers had been blacklisted like the Weavers (pa was an unabashed socialist).
To go back a further generation...
Dad used to sing a silly song that went There's a german on the grass with a bullet up his ass, pull it out, pull it out, boy scout, because he was whopped by HIS mother for singing it as a child... and we also had some Russian Red Army band music that included the israeli national anthem (or, I guess, the song that became the israeli national anthem) and Dad would sing I had a little candy store to the tune to really upset her. And once I found something that parodied the French national anthem, La Marseillaise, which I thought she would find funny, and she again got really upset, you don't make fun of La Marseillaise in front of people who lived through WWII, I guess. (We all cry watching Casablanca when they sing La Marseillaise and drown out the Germans.)