"I just use my muscles as a conversation piece, like someone walking a cheetah down 42nd Street"

This quote by Arnold Schwarzenegger is a humorous way of revealing his self-confidence in his physical strength. He is stating that his muscles are so remarkable that they can be used as a conversation starter, similar to someone strolling a cheetah down 42nd Street. This is a metaphor for something that is so unusual and distinct that it would draw attention and start conversations. By comparing his muscles to a cheetah, Schwarzenegger is suggesting that his body is so excellent that it is like an unusual and unique animal. He is likewise recommending that his physical strength is something to be appreciated and respected. This quote is an amusing method of expressing Schwarzenegger's confidence in his physical strength and his ability to draw attention and start conversations.