题目内容：

How to survive embarrassing moments? Have you ever accidently called your teacher Mum, or dropped your plate in your canteen(食堂) while everyone was looking at you? At that moment, you probably wished you could disappear into thin air. Unfortunately, embarrassing things happen to everyone at one time or another.

每个人都会经历尴尬时刻。请记叙一件你经历的尴尬事件。

要求：1. 要举事例。

2. 不少于120字。

3. 友情提示：

文章的开头要总说引起下文，接着举例，最后要写自己尴尬时刻的心理活动和感受。