One-upper is an annoying person who responds to hearing someone else’s experience or problem by immediately telling a similar story about themselves with a much more fantastic (or terrible) outcome.
One-upper是这样一种人:在听完别人的经历或问题后,马上就会分享自己的一个相似的故事,但结局总要比前面那个人说的故事精彩(或糟糕)得多。这种人相当令人讨厌。
One-upper is one who feels like they need to be better than everyone else, so they constantly "one-up" anything that anyone says.
One-upper觉得自己必须比其他任何人都要好,所以不管别人说什么,他们总要压人一头。