Hours seem minutes and minutes seem hours

Usually I feel that time is flying but there are times when I feel that minutes seem like hours...

Time doesn't seem to pass at all when
I have a bad headache and I am in a flight waiting to get off.
Waiting for something/someone...

Time magically seems to fly when
There is a deadline and I am still working :p
All possible things go wrong exactly when I am in haste :p

Oh yeah...this is all part of life...I know I know ...:)