Oh here's another one I just remembered:

I was walking to lecture with my friend and thought I wasn't late, so I went through the main door with such confidence (and loud voice) only to find that the professor already started the lecture, everyone including him were just looking at me...opps...oh and the best part is that I didn't move for like 2 minutes...just stood there! lol, and then quickly realized I have to go sit in my seat...so I TIP-TOED my way there as if noone saw me!!! hahaha

I'm not always right, but I'm never wrong :P - Garfield