Dead tired phrase informal
Completely fatigued.
I feel dead tired after walking ten kilometres.
After a long trip, she was dead tired.
I'm dead tired, but I can't sleep.
Said when you are too tired to do something
Used when one suffers from mental or emotional exhaustion
Very tired as you've used too much cannabis.
 
Be very bored
If a person has the devil's own luck, he or she has extremely good luck.
A: Yesterday I won a $10 million lottery jackpot and today I won a car in a draw. 
B: You have the devil's own luck.