Do you know Chines term "虎头蛇尾"

If you don't know English well, please don't comment.  I'm getting the impression that this phrase is perhaps commonly used in competitive swimming. If my hunch is right, then MacDonald's mistake was not using an insulting phrase – he probably meant it respectfully, in a swimmer-to-swimmer sense. However, he unfortunately used a phrase that could easily be perceived as insulting, given the large percentage of viewers who are unfamiliar with poolside jargon. Swimmers in Canada often use the phrase "died like a pig" to describe their own lackluster performance.  It's almost the same meaning of Chines term "虎头蛇尾".