Why is it when you watch the clock, time goes by SOOOOO SLOW?

[JEDI]

It's suppose to come in 15min. it did come on time but that 15 min went by sooooo slowly as i check my watch every 1min or so.

 

[SlitheryDee]

I find it more strange that when you feel a day has gone by quickly or slowly most people you talk to about it will agree with you. Time surely didn't slow down or speed up for all of us did it? If not, how is it that we all notice the difference at the same time?

 

[UncleWai]

Writing a 20 page essay the day before it is due is the shortest day ever for me.