Frank Zappa’s Grammy-winning album Jazz from Hell received a “Parental Advisory” sticker even though it is a collection of instrumental pieces and contains no lyrics at all.
On September 19, 1985, when Frank Zappa famously testified before Congress to protest the PMRC’s attempt to legislate and censor heavy metal music lyrics, Zappa compared the proposed legislation to “treating dandruff by decapitation”.
Frank Zappa made a quilt composed entirely of panties that were thrown on stage. He did not wash them first.
Frank Zappa was approached by a crazed fan with a gun. Zappa persuaded him into walking with him, and numerous others. to a nearby lake. He then persuaded everyone present to start throwing things into the water, including the attacker, who threw in his gun.