You know your tired when...

[LitleWaffle]

...when you look in the fridge in hopes of finding the mustard. =/

What sort of momentous occasion has happened to you that says that you need to go to sleep?

 

[CouchCommando]

when I rang my boss and quit my job on his message bank so I could sleep in, he still rang me and woke me in the morning though.......bastard.

 

[ultrachicken]

When you mistake the wii for the ps3.

 

[Marter]

When I can no longer type properly, I know I need to go to sleep.

This is actually the indicator I use most often.

 

[Banana Phone Man]

When in the mornings after just waking up, you pour your orange juice in a bowl of cerial and milk in a cup. Those cornflakes were ruined. I've done that a few times.

 

[Icarion (aka Stockholm)]

when I rang my boss and quit my job on his message bank so I could sleep in, he still rang me and woke me in the morning though.......bastard.

LMAO.

OT: When you put the cereal in the fridge and the milk in the cupboard

 

[TheYellowCellPhone]

...When you faint when you stand up.

Done it a few times. Fainting is a *****, let me tell you.

 

[Taddy]

When you play starcraft you notice that your base that you KNOW a second ago was perfectly fine is now half gone.

 

[Happy Sock Puppet]

In WoW: When you try to tank in Fury stance.

In TF2: When you realize you haven't got a kill in 10 minutes.

 

[Blank Kold]

When your excuse for leaving conversations becomes "passing out."

 

[Sassafrass]

When Gary the friendly pink unicorn gores you.
WHY GARY, WHY?!

Oh, and also when you start hallucinating pink unicorns.
And when you sit staring at something for about 5 minutes then go "...What?" I've done that a few times.

 

[Megacobb]

When you go to the bathroom look in the mirror and you look like your Cloud Strife and start to hear battle music.

 

[Chris Sandford]

When you forget what year you graduated High School...and then realize you havent graduated yet.

EDIT: I did that last year...not currently.

 

[SimuLord]

When you fall asleep during sex.

 

[AvsJoe]

When you vividly imaging someone throwing an egg at you and barely missing, when in fact there wasn't a person at all.

Incidentally I keep my mustadio in the fridge as well.

 

[Ironic Pirate]

I once put a spoon in a milk jug and tried to eat breakfast with the cap.

Tried to do homework on a piece of bread.

Tried to teach the guinea pig to sit.

And finally, yesterday, I tried to read my cat.

 

[MikailCaboose]

When I'm doing homework
Apparently a humorous argument in a ToK presentation on a section of the Extended Essay included an argument about the Apollo 13 mission failing because of interference by highly advanced Moon Rabbits and not just mere mechanical failures...
*shrugs* Got an almost perfect on the entire project so it's not to worry.