Whats your most embarrasing moment?

Several days ago,I went to the washroom,where I found a friend ,then I started to talked to him.... Several minutes had pasted,he never answered me but looked at me all long!I walked to him,Oh,my god,it's a stranger,I mistook it! This made me embarrased.

i have many embarassing moments but this one is the most embarrasing moment that i had. My sister and I are having a vacation in our province. Im very excited to go there because i will see my grandma and my cousins. When we are there I dont know that the house of my grandma is located to the top of mountain. We are going to climbed up to reached the house of my grandma. When we are in the top,we are shocked because the dog barked to us. We fell down the mountain...my sister and I are rolling down the mountain that was so embarassing. After that my gradpa escorted us to their house and clean the wounds that we have. That one is so humiliating...

i think its somewhat similar. we were having a meeting in one meting room. that room was booked and we were let known. we arrived there in time. at that time there were few people in that room and another one was standing and showing something on the projector. we thought it was the session we are to attent. we went and almost took seats. then we realized its another one session that has not ended up in time.

it would be walking in to a class room that i thought was my class! sitting down and getting all my materials out and trying to get started on my computer! when in turn of event it wasn't my networking class it was a anatomy class with a similar layout. but my excuse was valid, it was my fist day of college and i didn't know my way around!