"I screwed my knee up once because I fell off the stage"

This quote by Zakk Wylde is a funny reflection on a previous experience. It implies that he was performing on stage and had a mishap that led to an injury to his knee. This could be interpreted as a tip to be cautious when carrying out on phase, as it can be a hazardous place. It might also be analyzed as a tip to take care of one's body, as injuries can take place unexpectedly. The quote could also be translated as a pointer to take threats and to not hesitate to attempt new things, even if it indicates taking a threat. It might likewise be translated as a pointer to make fun of oneself and to not take life too seriously. Eventually, this quote is a suggestion to be conscious of one's actions and to look after oneself.